| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/test/web_contents_observer_consistency_checker.h" |
| |
| #include "base/containers/contains.h" |
| #include "base/containers/cxx20_erase.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/pending_task.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/task/common/task_annotator.h" |
| #include "build/build_config.h" |
| #include "content/browser/renderer_host/frame_tree_node.h" |
| #include "content/browser/renderer_host/navigation_entry_impl.h" |
| #include "content/browser/renderer_host/page_impl.h" |
| #include "content/browser/renderer_host/render_frame_host_impl.h" |
| #include "content/common/content_navigation_policy.h" |
| #include "content/public/browser/navigation_handle.h" |
| #include "content/public/browser/render_frame_host.h" |
| #include "content/public/browser/render_process_host.h" |
| #include "content/public/browser/render_widget_host.h" |
| #include "content/public/browser/site_instance.h" |
| #include "content/public/browser/web_contents.h" |
| #include "content/public/browser/web_contents_observer.h" |
| #include "content/public/test/test_utils.h" |
| #include "net/base/net_errors.h" |
| #include "third_party/blink/public/common/frame/frame_owner_element_type.h" |
| |
| namespace content { |
| |
| namespace { |
| |
| const char kWebContentsObserverConsistencyCheckerKey[] = |
| "WebContentsObserverConsistencyChecker"; |
| |
| using LifecycleStateImpl = RenderFrameHostImpl::LifecycleStateImpl; |
| |
| GlobalRoutingID GetRoutingPair(RenderFrameHost* host) { |
| if (!host) |
| return GlobalRoutingID(0, 0); |
| return GlobalRoutingID(host->GetProcess()->GetID(), host->GetRoutingID()); |
| } |
| |
| } // namespace |
| |
| // static |
| void WebContentsObserverConsistencyChecker::Enable(WebContents* web_contents) { |
| if (web_contents->GetUserData(&kWebContentsObserverConsistencyCheckerKey)) |
| return; |
| web_contents->SetUserData( |
| &kWebContentsObserverConsistencyCheckerKey, |
| base::WrapUnique( |
| new WebContentsObserverConsistencyChecker(web_contents))); |
| } |
| |
| void WebContentsObserverConsistencyChecker::RenderFrameCreated( |
| RenderFrameHost* render_frame_host) { |
| CHECK(!web_contents_destroyed_); |
| GlobalRoutingID routing_pair = GetRoutingPair(render_frame_host); |
| bool frame_exists = !live_routes_.insert(routing_pair).second; |
| deleted_routes_.erase(routing_pair); |
| |
| if (frame_exists) { |
| CHECK(false) << "RenderFrameCreated called more than once for routing pair:" |
| << Format(render_frame_host); |
| } |
| |
| CHECK(render_frame_host->IsRenderFrameCreated()) |
| << "RenderFrameCreated was called for a RenderFrameHost that has not been" |
| "marked created."; |
| CHECK(render_frame_host->GetProcess()->IsInitializedAndNotDead()) |
| << "RenderFrameCreated was called for a RenderFrameHost whose render " |
| "process is not currently live, so there's no way for the RenderFrame " |
| "to have been created."; |
| CHECK(render_frame_host->IsRenderFrameLive()) |
| << "RenderFrameCreated called on for a RenderFrameHost that thinks it is " |
| "not alive."; |
| |
| EnsureStableParentValue(render_frame_host); |
| CHECK(!HasAnyChildren(render_frame_host)); |
| if (render_frame_host->GetParent()) { |
| // It should also be a current host. |
| GlobalRoutingID parent_routing_pair = |
| GetRoutingPair(render_frame_host->GetParent()); |
| |
| CHECK(current_hosts_.count(parent_routing_pair)) |
| << "RenderFrameCreated called for a RenderFrameHost whose parent was " |
| << "not a current RenderFrameHost. Only the current frame should be " |
| << "spawning children."; |
| } |
| AddInputEventObserver(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::RenderFrameDeleted( |
| RenderFrameHost* render_frame_host) { |
| CHECK(!web_contents_destroyed_); |
| CHECK(!render_frame_host->IsRenderFrameCreated()) |
| << "RenderFrameDeleted was called for a RenderFrameHost that is" |
| "(still) marked as created."; |
| CHECK(!render_frame_host->IsRenderFrameLive()) |
| << "RenderFrameDeleted was called for a RenderFrameHost that is" |
| "still live."; |
| |
| GlobalRoutingID routing_pair = GetRoutingPair(render_frame_host); |
| bool was_live = !!live_routes_.erase(routing_pair); |
| bool was_dead_already = !deleted_routes_.insert(routing_pair).second; |
| |
| if (was_dead_already) { |
| CHECK(false) << "RenderFrameDeleted called more than once for routing pair " |
| << Format(render_frame_host); |
| } else if (!was_live) { |
| CHECK(false) << "RenderFrameDeleted called for routing pair " |
| << Format(render_frame_host) |
| << " for which RenderFrameCreated was never called"; |
| } |
| |
| EnsureStableParentValue(render_frame_host); |
| CHECK(!HasAnyChildren(render_frame_host)); |
| if (render_frame_host->GetParent()) |
| AssertRenderFrameExists(render_frame_host->GetParent()); |
| |
| // All players should have been paused by this point. |
| for (const auto& id : active_media_players_) |
| CHECK_NE(RenderFrameHost::FromID(id.frame_routing_id), render_frame_host); |
| RemoveInputEventObserver(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::RenderFrameHostChanged( |
| RenderFrameHost* old_host, |
| RenderFrameHost* new_host) { |
| CHECK(new_host); |
| CHECK_NE(new_host, old_host); |
| CHECK(GetRoutingPair(old_host) != GetRoutingPair(new_host)); |
| |
| if (old_host) { |
| CHECK(base::Contains(frame_tree_node_ids_, new_host->GetFrameTreeNodeId())); |
| EnsureStableParentValue(old_host); |
| CHECK_EQ(old_host->GetParent(), new_host->GetParent()); |
| GlobalRoutingID routing_pair = GetRoutingPair(old_host); |
| // If the navigation requires a new RFH, IsActive on old host should be |
| // false. |
| CHECK(!old_host->IsActive()); |
| bool old_did_exist = !!current_hosts_.erase(routing_pair); |
| if (!old_did_exist) { |
| CHECK(false) |
| << "RenderFrameHostChanged called with old host that did not exist:" |
| << Format(old_host); |
| } |
| } else { |
| CHECK(frame_tree_node_ids_.insert(new_host->GetFrameTreeNodeId()).second); |
| } |
| |
| auto* new_host_impl = static_cast<RenderFrameHostImpl*>(new_host); |
| CHECK(new_host_impl->lifecycle_state() == LifecycleStateImpl::kActive || |
| new_host_impl->lifecycle_state() == LifecycleStateImpl::kPrerendering); |
| EnsureStableParentValue(new_host); |
| if (new_host->GetParent()) { |
| AssertRenderFrameExists(new_host->GetParent()); |
| // RenderFrameCreated should be called before RenderFrameHostChanged for all |
| // the subframes except for those which are the outer delegates for: |
| // - Portals |
| // - Fenced frames based specifically on MPArch |
| // This is because those special-case frames do not have live RenderFrames |
| // in the renderer process. |
| bool is_render_frame_created_needed_for_child = |
| (new_host->GetFrameOwnerElementType() != |
| blink::FrameOwnerElementType::kPortal && |
| new_host->GetFrameOwnerElementType() != |
| blink::FrameOwnerElementType::kFencedframe) || |
| (new_host->GetFrameOwnerElementType() == |
| blink::FrameOwnerElementType::kFencedframe && |
| blink::features::kFencedFramesImplementationTypeParam.Get() == |
| blink::features::FencedFramesImplementationType::kShadowDOM); |
| if (is_render_frame_created_needed_for_child) { |
| AssertRenderFrameExists(new_host); |
| } |
| CHECK(current_hosts_.count(GetRoutingPair(new_host->GetParent()))) |
| << "Parent of frame being committed must be current."; |
| } |
| |
| GlobalRoutingID routing_pair = GetRoutingPair(new_host); |
| bool host_exists = !current_hosts_.insert(routing_pair).second; |
| // TODO(https://crbug.com/1179683): Figure out a better way to deal with |
| // MPArch. |
| if (host_exists && !blink::features::IsPrerender2Enabled()) { |
| CHECK(false) |
| << "RenderFrameHostChanged called more than once for routing pair:" |
| << Format(new_host); |
| } |
| |
| // If |new_host| is restored from the BackForwardCache, it can contain |
| // iframes, otherwise it has just been created and can't contain iframes for |
| // the moment. |
| // |
| // TODO(https://crbug.com/1179683): Figure out a better way to deal with |
| // handling the new RenderFrameHost coming from a prerendered activation |
| // rather than an ordinary activation. |
| if (!IsBackForwardCacheEnabled() && !blink::features::IsPrerender2Enabled()) { |
| CHECK(!HasAnyChildren(new_host)) |
| << "A frame should not have children before it is committed."; |
| } |
| } |
| |
| void WebContentsObserverConsistencyChecker::FrameDeleted( |
| int frame_tree_node_id) { |
| // A frame can be deleted before RenderFrame in the renderer process is |
| // created, so there is not much that can be enforced here. |
| CHECK(!web_contents_destroyed_); |
| |
| CHECK(frame_tree_node_ids_.erase(frame_tree_node_id)); |
| |
| RenderFrameHostImpl* render_frame_host = |
| FrameTreeNode::GloballyFindByID(frame_tree_node_id)->current_frame_host(); |
| |
| // Will be nullptr if this is main frame of a non primary FrameTree whose page |
| // was moved out (e.g. due Prerender activation). |
| if (!render_frame_host) { |
| DCHECK_NE(FrameTreeNode::GloballyFindByID(frame_tree_node_id) |
| ->frame_tree() |
| ->type(), |
| FrameTree::Type::kPrimary); |
| return; |
| } |
| |
| EnsureStableParentValue(render_frame_host); |
| |
| CHECK(!HasAnyChildren(render_frame_host)) |
| << "All children should be deleted before a frame is detached."; |
| |
| GlobalRoutingID routing_pair = GetRoutingPair(render_frame_host); |
| CHECK(current_hosts_.erase(routing_pair)) |
| << "FrameDeleted called with a non-current RenderFrameHost."; |
| |
| if (render_frame_host->GetParent()) |
| AssertRenderFrameExists(render_frame_host->GetParent()); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidStartNavigation( |
| NavigationHandle* navigation_handle) { |
| CHECK(!NavigationIsOngoing(navigation_handle)); |
| |
| // Prerendered page activation should run subsequent navigation events in the |
| // same task. |
| if (navigation_handle->IsPrerenderedPageActivation()) |
| task_checker_for_prerendered_page_activation_.BindCurrentTask(); |
| |
| CHECK(!navigation_handle->HasCommitted()); |
| CHECK(!navigation_handle->IsErrorPage()); |
| CHECK_EQ(navigation_handle->GetWebContents(), web_contents()); |
| |
| ongoing_navigations_.insert(navigation_handle); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidRedirectNavigation( |
| NavigationHandle* navigation_handle) { |
| CHECK(NavigationIsOngoing(navigation_handle)); |
| |
| // DidRedirectionNavigation() should not be called for page activation. |
| CHECK(!navigation_handle->IsServedFromBackForwardCache()); |
| CHECK(!navigation_handle->IsPrerenderedPageActivation()); |
| |
| CHECK(navigation_handle->GetNetErrorCode() == net::OK); |
| CHECK(!navigation_handle->HasCommitted()); |
| CHECK(!navigation_handle->IsErrorPage()); |
| CHECK_EQ(navigation_handle->GetWebContents(), web_contents()); |
| } |
| |
| void WebContentsObserverConsistencyChecker::ReadyToCommitNavigation( |
| NavigationHandle* navigation_handle) { |
| CHECK(NavigationIsOngoing(navigation_handle)); |
| |
| // Prerendered page activation should run navigation events in the same task. |
| if (navigation_handle->IsPrerenderedPageActivation()) { |
| CHECK(task_checker_for_prerendered_page_activation_.IsRunningInSameTask()); |
| } |
| |
| CHECK(!navigation_handle->HasCommitted()); |
| CHECK_EQ(navigation_handle->GetWebContents(), web_contents()); |
| CHECK(navigation_handle->GetRenderFrameHost()); |
| CHECK(navigation_handle->GetRenderFrameHost()->IsRenderFrameLive()); |
| |
| ready_to_commit_hosts_.insert( |
| std::make_pair(navigation_handle->GetNavigationId(), |
| navigation_handle->GetRenderFrameHost())); |
| } |
| |
| void WebContentsObserverConsistencyChecker::PrimaryPageChanged(Page& page) { |
| CHECK_EQ(&web_contents()->GetPrimaryPage(), &page) |
| << "PrimaryPageChanged invoked on non-primary page."; |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidFinishNavigation( |
| NavigationHandle* navigation_handle) { |
| CHECK(NavigationIsOngoing(navigation_handle)); |
| |
| // Prerendered page activation should run navigation events in the same task. |
| if (navigation_handle->IsPrerenderedPageActivation()) { |
| CHECK(task_checker_for_prerendered_page_activation_.IsRunningInSameTask()); |
| } |
| |
| CHECK(!(navigation_handle->HasCommitted() && |
| !navigation_handle->IsErrorPage()) || |
| navigation_handle->GetNetErrorCode() == net::OK); |
| CHECK_EQ(navigation_handle->GetWebContents(), web_contents()); |
| |
| CHECK(!navigation_handle->HasCommitted() || |
| navigation_handle->GetRenderFrameHost()); |
| |
| if (navigation_handle->HasCommitted()) { |
| RenderFrameHostImpl* new_rfh = static_cast<RenderFrameHostImpl*>( |
| navigation_handle->GetRenderFrameHost()); |
| CHECK(new_rfh->lifecycle_state() == LifecycleStateImpl::kActive || |
| new_rfh->lifecycle_state() == LifecycleStateImpl::kPrerendering); |
| } |
| |
| CHECK(!navigation_handle->HasCommitted() || |
| navigation_handle->GetRenderFrameHost()->IsRenderFrameLive()); |
| |
| // If ReadyToCommitNavigation was dispatched, verify that the |
| // |navigation_handle| has the same RenderFrameHost at this time as the one |
| // returned at ReadyToCommitNavigation. |
| if (base::Contains(ready_to_commit_hosts_, |
| navigation_handle->GetNavigationId())) { |
| CHECK_EQ(ready_to_commit_hosts_[navigation_handle->GetNavigationId()], |
| navigation_handle->GetRenderFrameHost()); |
| ready_to_commit_hosts_.erase(navigation_handle->GetNavigationId()); |
| } |
| |
| ongoing_navigations_.erase(navigation_handle); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DocumentAvailableInMainFrame( |
| RenderFrameHost* render_frame_host) { |
| AssertMainFrameExists(); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DocumentOnLoadCompletedInMainFrame( |
| RenderFrameHost* render_frame_host) { |
| CHECK(static_cast<PageImpl&>(render_frame_host->GetPage()) |
| .is_on_load_completed_in_main_document()); |
| AssertMainFrameExists(); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DOMContentLoaded( |
| RenderFrameHost* render_frame_host) { |
| AssertRenderFrameExists(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidFinishLoad( |
| RenderFrameHost* render_frame_host, |
| const GURL& validated_url) { |
| AssertRenderFrameExists(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidFailLoad( |
| RenderFrameHost* render_frame_host, |
| const GURL& validated_url, |
| int error_code) { |
| AssertRenderFrameExists(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidOpenRequestedURL( |
| WebContents* new_contents, |
| RenderFrameHost* source_render_frame_host, |
| const GURL& url, |
| const Referrer& referrer, |
| WindowOpenDisposition disposition, |
| ui::PageTransition transition, |
| bool started_from_context_menu, |
| bool renderer_initiated) { |
| AssertRenderFrameExists(source_render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::MediaStartedPlaying( |
| const MediaPlayerInfo& media_info, |
| const MediaPlayerId& id) { |
| CHECK(!web_contents_destroyed_); |
| CHECK(!base::Contains(active_media_players_, id)); |
| active_media_players_.push_back(id); |
| } |
| |
| void WebContentsObserverConsistencyChecker::MediaStoppedPlaying( |
| const MediaPlayerInfo& media_info, |
| const MediaPlayerId& id, |
| WebContentsObserver::MediaStoppedReason reason) { |
| CHECK(!web_contents_destroyed_); |
| CHECK(base::Contains(active_media_players_, id)); |
| base::Erase(active_media_players_, id); |
| } |
| |
| bool WebContentsObserverConsistencyChecker::OnMessageReceived( |
| const IPC::Message& message, |
| RenderFrameHost* render_frame_host) { |
| CHECK(render_frame_host->IsRenderFrameLive()); |
| |
| AssertRenderFrameExists(render_frame_host); |
| return false; |
| } |
| |
| void WebContentsObserverConsistencyChecker::WebContentsDestroyed() { |
| CHECK(!web_contents_destroyed_); |
| web_contents_destroyed_ = true; |
| CHECK(ongoing_navigations_.empty()); |
| CHECK(active_media_players_.empty()); |
| CHECK(live_routes_.empty()); |
| CHECK(frame_tree_node_ids_.empty()); |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidStartLoading() { |
| // TODO(clamy): add checks for the loading state in the rest of observer |
| // methods. |
| // TODO(crbug.com/1145572): Add back CHECK(!is_loading_). The CHECK was |
| // removed because of flaky failures during some browser_tests. |
| CHECK(web_contents()->IsLoading()); |
| is_loading_ = true; |
| } |
| |
| void WebContentsObserverConsistencyChecker::DidStopLoading() { |
| // TODO(crbug.com/466089): Add back CHECK(is_loading_). The CHECK was removed |
| // because of flaky failures during browser_test shutdown. |
| CHECK(!web_contents()->IsLoading()); |
| is_loading_ = false; |
| } |
| |
| WebContentsObserverConsistencyChecker::WebContentsObserverConsistencyChecker( |
| WebContents* web_contents) |
| : WebContentsObserver(web_contents), |
| is_loading_(false), |
| web_contents_destroyed_(false) {} |
| |
| WebContentsObserverConsistencyChecker:: |
| ~WebContentsObserverConsistencyChecker() { |
| CHECK(web_contents_destroyed_); |
| CHECK(ready_to_commit_hosts_.empty()); |
| } |
| |
| void WebContentsObserverConsistencyChecker::AssertRenderFrameExists( |
| RenderFrameHost* render_frame_host) { |
| CHECK(!web_contents_destroyed_); |
| GlobalRoutingID routing_pair = GetRoutingPair(render_frame_host); |
| |
| bool render_frame_created_happened = live_routes_.count(routing_pair) != 0; |
| bool render_frame_deleted_happened = deleted_routes_.count(routing_pair) != 0; |
| |
| CHECK(render_frame_created_happened) |
| << "A RenderFrameHost pointer was passed to a WebContentsObserver " |
| << "method, but WebContentsObserver::RenderFrameCreated was never called " |
| << "for that RenderFrameHost: " << Format(render_frame_host); |
| CHECK(!render_frame_deleted_happened) |
| << "A RenderFrameHost pointer was passed to a WebContentsObserver " |
| << "method, but WebContentsObserver::RenderFrameDeleted had already been " |
| << "called on that frame:" << Format(render_frame_host); |
| } |
| |
| void WebContentsObserverConsistencyChecker::AssertMainFrameExists() { |
| AssertRenderFrameExists(web_contents()->GetMainFrame()); |
| } |
| |
| std::string WebContentsObserverConsistencyChecker::Format( |
| RenderFrameHost* render_frame_host) { |
| return base::StringPrintf( |
| "(%d, %d -> %s)", render_frame_host->GetProcess()->GetID(), |
| render_frame_host->GetRoutingID(), |
| render_frame_host->GetSiteInstance()->GetSiteURL().spec().c_str()); |
| } |
| |
| bool WebContentsObserverConsistencyChecker::NavigationIsOngoing( |
| NavigationHandle* navigation_handle) { |
| auto it = ongoing_navigations_.find(navigation_handle); |
| return it != ongoing_navigations_.end(); |
| } |
| |
| void WebContentsObserverConsistencyChecker::EnsureStableParentValue( |
| RenderFrameHost* render_frame_host) { |
| GlobalRoutingID routing_pair = GetRoutingPair(render_frame_host); |
| GlobalRoutingID parent_routing_pair = |
| GetRoutingPair(render_frame_host->GetParent()); |
| |
| auto it = parent_ids_.find(routing_pair); |
| if (it == parent_ids_.end()) { |
| parent_ids_.insert(std::make_pair(routing_pair, parent_routing_pair)); |
| } else { |
| GlobalRoutingID former_parent_routing_pair = it->second; |
| CHECK_EQ(former_parent_routing_pair, parent_routing_pair) |
| << "RFH's parent value changed over time! That is really not good!"; |
| } |
| } |
| |
| bool WebContentsObserverConsistencyChecker::HasAnyChildren( |
| RenderFrameHost* parent) { |
| GlobalRoutingID parent_routing_pair = GetRoutingPair(parent); |
| for (auto& entry : parent_ids_) { |
| if (entry.second == parent_routing_pair) { |
| if (live_routes_.count(entry.first)) |
| return true; |
| if (current_hosts_.count(entry.first)) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| class WebContentsObserverConsistencyChecker::TestInputEventObserver |
| : public RenderWidgetHost::InputEventObserver { |
| public: |
| explicit TestInputEventObserver(RenderFrameHost& render_frame_host) |
| : render_frame_host_wrapper_(&render_frame_host), |
| render_widget_host_(static_cast<RenderWidgetHostImpl*>( |
| render_frame_host.GetRenderWidgetHost()) |
| ->GetWeakPtr()) { |
| render_widget_host_->AddInputEventObserver(this); |
| } |
| ~TestInputEventObserver() override { |
| if (render_widget_host_) |
| render_widget_host_->RemoveInputEventObserver(this); |
| } |
| |
| void OnInputEvent(const blink::WebInputEvent&) override { |
| EnsureRenderFrameHostNotPrerendered(); |
| } |
| void OnInputEventAck(blink::mojom::InputEventResultSource source, |
| blink::mojom::InputEventResultState state, |
| const blink::WebInputEvent&) override { |
| EnsureRenderFrameHostNotPrerendered(); |
| } |
| |
| private: |
| void EnsureRenderFrameHostNotPrerendered() { |
| if (render_frame_host_wrapper_.IsDestroyed()) |
| return; |
| |
| // TODO(crbug.com/1183639): Use RenderFrameHost::GetLifecycleState() if it |
| // is possible. |
| int frame_tree_node_id = |
| content::RenderFrameHost::GetFrameTreeNodeIdForRoutingId( |
| render_frame_host_wrapper_->GetProcess()->GetID(), |
| render_frame_host_wrapper_->GetRoutingID()); |
| CHECK(!FrameTreeNode::GloballyFindByID(frame_tree_node_id) |
| ->frame_tree() |
| ->is_prerendering()); |
| } |
| |
| RenderFrameHostWrapper render_frame_host_wrapper_; |
| base::WeakPtr<RenderWidgetHostImpl> render_widget_host_; |
| }; |
| |
| void WebContentsObserverConsistencyChecker::AddInputEventObserver( |
| RenderFrameHost* render_frame_host) { |
| auto result = input_observer_map_.insert(std::make_pair( |
| render_frame_host, |
| std::make_unique<TestInputEventObserver>(*render_frame_host))); |
| CHECK(result.second); |
| } |
| |
| void WebContentsObserverConsistencyChecker::RemoveInputEventObserver( |
| RenderFrameHost* render_frame_host) { |
| auto it = input_observer_map_.find(render_frame_host); |
| CHECK(it != input_observer_map_.end()); |
| input_observer_map_.erase(it); |
| } |
| |
| WebContentsObserverConsistencyChecker::TaskChecker::TaskChecker() |
| : sequence_num_(GetSequenceNumberOfCurrentTask()) {} |
| |
| void WebContentsObserverConsistencyChecker::TaskChecker::BindCurrentTask() { |
| sequence_num_ = GetSequenceNumberOfCurrentTask(); |
| } |
| |
| bool WebContentsObserverConsistencyChecker::TaskChecker::IsRunningInSameTask() { |
| return sequence_num_ == GetSequenceNumberOfCurrentTask(); |
| } |
| |
| absl::optional<int> WebContentsObserverConsistencyChecker::TaskChecker:: |
| GetSequenceNumberOfCurrentTask() { |
| return base::TaskAnnotator::CurrentTaskForThread() |
| ? absl::make_optional( |
| base::TaskAnnotator::CurrentTaskForThread()->sequence_num) |
| : absl::nullopt; |
| } |
| |
| } // namespace content |