cc/layers/surface_layer_unittest.cc - chromium/src - Git at Google

 // 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 <stdint.h>

 #include <set>
 #include <vector>

 #include "base/location.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "cc/animation/animation_host.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/layers/surface_layer.h"
 #include "cc/layers/surface_layer_impl.h"
 #include "cc/output/compositor_frame.h"
 #include "cc/surfaces/sequence_surface_reference_factory.h"
 #include "cc/surfaces/surface_info.h"
 #include "cc/test/fake_impl_task_runner_provider.h"
 #include "cc/test/fake_layer_tree_host.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/layer_tree_test.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/trees/layer_tree_host.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace cc {
 namespace {

 static constexpr FrameSinkId kArbitraryFrameSinkId(1, 1);

 class SurfaceLayerTest : public testing::Test {
  public:
   SurfaceLayerTest()
       : host_impl_(&task_runner_provider_, &task_graph_runner_) {}

  protected:
   void SetUp() override {
     animation_host_ = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
     layer_tree_host_ = FakeLayerTreeHost::Create(
         &fake_client_, &task_graph_runner_, animation_host_.get());
     layer_tree_host_->SetViewportSize(gfx::Size(10, 10));
     host_impl_.CreatePendingTree();
   }

   void TearDown() override {
     if (layer_tree_host_) {
       layer_tree_host_->SetRootLayer(nullptr);
       layer_tree_host_ = nullptr;
     }
   }

   FakeLayerTreeHostClient fake_client_;
   FakeImplTaskRunnerProvider task_runner_provider_;
   TestTaskGraphRunner task_graph_runner_;
   std::unique_ptr<AnimationHost> animation_host_;
   std::unique_ptr<FakeLayerTreeHost> layer_tree_host_;
   FakeLayerTreeHostImpl host_impl_;
 };

 class TestSurfaceReferenceFactory : public SequenceSurfaceReferenceFactory {
  protected:
   void SatisfySequence(const SurfaceSequence& seq) const override {
     *out_seq_ = seq;
   }

   void RequireSequence(const SurfaceId& id,
                        const SurfaceSequence& seq) const override {
     *out_id_ = id;
     out_set_->insert(seq);
   }

  public:
   TestSurfaceReferenceFactory(SurfaceSequence* out_seq,
                               SurfaceId* out_id,
                               std::set<SurfaceSequence>* out_set)
       : out_seq_(out_seq), out_id_(out_id), out_set_(out_set) {}

  protected:
   ~TestSurfaceReferenceFactory() override = default;

  private:
   SurfaceSequence* out_seq_;
   SurfaceId* out_id_;
   std::set<SurfaceSequence>* out_set_;

   DISALLOW_COPY_AND_ASSIGN(TestSurfaceReferenceFactory);
 };

 // Check that one surface can be referenced by multiple LayerTreeHosts, and
 // each will create its own SurfaceSequence that's satisfied on destruction.
 TEST_F(SurfaceLayerTest, MultipleFramesOneSurface) {
   const base::UnguessableToken kArbitraryToken =
       base::UnguessableToken::Create();
   SurfaceSequence blank_change;  // Receives sequence if commit doesn't happen.

   SurfaceId required_id;
   std::set<SurfaceSequence> required_seq;
   scoped_refptr<SurfaceReferenceFactory> ref_factory =
       new TestSurfaceReferenceFactory(&blank_change, &required_id,
                                       &required_seq);
   auto layer = SurfaceLayer::Create(ref_factory);
   SurfaceInfo info(
       SurfaceId(kArbitraryFrameSinkId, LocalSurfaceId(1, kArbitraryToken)), 1.f,
       gfx::Size(1, 1));
   layer->SetPrimarySurfaceInfo(info);
   layer_tree_host_->GetSurfaceSequenceGenerator()->set_frame_sink_id(
       FrameSinkId(1, 1));
   layer_tree_host_->SetRootLayer(layer);

   auto animation_host2 = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
   std::unique_ptr<FakeLayerTreeHost> layer_tree_host2 =
       FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_,
                                 animation_host2.get());
   auto layer2 = SurfaceLayer::Create(std::move(ref_factory));
   layer2->SetPrimarySurfaceInfo(info);
   layer_tree_host2->GetSurfaceSequenceGenerator()->set_frame_sink_id(
       FrameSinkId(2, 2));
   layer_tree_host2->SetRootLayer(layer2);

   // Layers haven't been removed, so no sequence should be satisfied.
   EXPECT_FALSE(blank_change.is_valid());

   SurfaceSequence expected1(FrameSinkId(1, 1), 1u);
   SurfaceSequence expected2(FrameSinkId(2, 2), 1u);

   layer_tree_host2->SetRootLayer(nullptr);
   layer_tree_host2.reset();
   animation_host2 = nullptr;

   // Layer was removed so sequence from second LayerTreeHost should be
   // satisfied.
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(blank_change == expected2);

   // Set of sequences that need to be satisfied should include sequences from
   // both trees.
   EXPECT_TRUE(required_id == SurfaceId(kArbitraryFrameSinkId,
                                        LocalSurfaceId(1, kArbitraryToken)));
   EXPECT_EQ(2u, required_seq.size());
   EXPECT_TRUE(required_seq.count(expected1));
   EXPECT_TRUE(required_seq.count(expected2));

   layer_tree_host_->SetRootLayer(nullptr);
   layer_tree_host_.reset();

   // Layer was removed so sequence from first LayerTreeHost should be
   // satisfied.
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE(blank_change == expected1);

   // No more SurfaceSequences should have been generated that need to have be
   // satisfied.
   EXPECT_EQ(2u, required_seq.size());
 }

 // This test verifies that the primary and fallback SurfaceInfo are pushed
 // across from SurfaceLayer to SurfaceLayerImpl.
 TEST_F(SurfaceLayerTest, SurfaceInfoPushProperties) {
   SurfaceSequence blank_change;
   SurfaceId required_id;
   std::set<SurfaceSequence> required_sequences;
   scoped_refptr<SurfaceReferenceFactory> ref_factory =
       new TestSurfaceReferenceFactory(&blank_change, &required_id,
                                       &required_sequences);

   scoped_refptr<SurfaceLayer> layer = SurfaceLayer::Create(ref_factory);
   layer_tree_host_->SetRootLayer(layer);
   SurfaceInfo primary_info(
       SurfaceId(kArbitraryFrameSinkId,
                 LocalSurfaceId(1, base::UnguessableToken::Create())),
       1.f, gfx::Size(1, 1));
   layer->SetPrimarySurfaceInfo(primary_info);

   std::unique_ptr<SurfaceLayerImpl> layer_impl =
       SurfaceLayerImpl::Create(host_impl_.pending_tree(), layer->id());
   layer->PushPropertiesTo(layer_impl.get());

   // Verify tha the primary SurfaceInfo is pushed through and that there is
   // no valid fallback SurfaceInfo.
   EXPECT_EQ(primary_info, layer_impl->primary_surface_info());
   EXPECT_EQ(SurfaceInfo(), layer_impl->fallback_surface_info());

   SurfaceInfo fallback_info(
       SurfaceId(kArbitraryFrameSinkId,
                 LocalSurfaceId(2, base::UnguessableToken::Create())),
       2.f, gfx::Size(10, 10));
   layer->SetFallbackSurfaceInfo(fallback_info);
   layer->PushPropertiesTo(layer_impl.get());

   // Verify that the primary SurfaceInfo stays the same and the new fallback
   // SurfaceInfo is pushed through.
   EXPECT_EQ(primary_info, layer_impl->primary_surface_info());
   EXPECT_EQ(fallback_info, layer_impl->fallback_surface_info());
 }

 // Check that SurfaceSequence is sent through swap promise.
 class SurfaceLayerSwapPromise : public LayerTreeTest {
  public:
   SurfaceLayerSwapPromise()
       : commit_count_(0), sequence_was_satisfied_(false) {}

   void BeginTest() override {
     layer_tree_host()->GetSurfaceSequenceGenerator()->set_frame_sink_id(
         FrameSinkId(1, 1));
     layer_ = SurfaceLayer::Create(new TestSurfaceReferenceFactory(
         &satisfied_sequence_, &required_id_, &required_set_));
     SurfaceInfo info(
         SurfaceId(kArbitraryFrameSinkId, LocalSurfaceId(1, kArbitraryToken)),
         1.f, gfx::Size(1, 1));
     layer_->SetPrimarySurfaceInfo(info);

     // Layer hasn't been added to tree so no SurfaceSequence generated yet.
     EXPECT_EQ(0u, required_set_.size());

     layer_tree_host()->SetRootLayer(layer_);

     // Should have SurfaceSequence from first tree.
     SurfaceSequence expected(kArbitraryFrameSinkId, 1u);
     EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
                                           LocalSurfaceId(1, kArbitraryToken)));
     EXPECT_EQ(1u, required_set_.size());
     EXPECT_TRUE(required_set_.count(expected));

     gfx::Size bounds(100, 100);
     layer_tree_host()->SetViewportSize(bounds);

     blank_layer_ = SolidColorLayer::Create();
     blank_layer_->SetIsDrawable(true);
     blank_layer_->SetBounds(gfx::Size(10, 10));

     PostSetNeedsCommitToMainThread();
   }

   virtual void ChangeTree() = 0;

   void DidCommitAndDrawFrame() override {
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE, base::Bind(&SurfaceLayerSwapPromise::ChangeTree,
                               base::Unretained(this)));
   }

  protected:
   int commit_count_;
   bool sequence_was_satisfied_;
   scoped_refptr<SurfaceLayer> layer_;
   scoped_refptr<Layer> blank_layer_;
   SurfaceSequence satisfied_sequence_;

   SurfaceId required_id_;
   std::set<SurfaceSequence> required_set_;
   const base::UnguessableToken kArbitraryToken =
       base::UnguessableToken::Create();
 };

 // Check that SurfaceSequence is sent through swap promise.
 class SurfaceLayerSwapPromiseWithDraw : public SurfaceLayerSwapPromise {
  public:
   void ChangeTree() override {
     ++commit_count_;
     switch (commit_count_) {
       case 1:
         // Remove SurfaceLayer from tree to cause SwapPromise to be created.
         layer_tree_host()->SetRootLayer(blank_layer_);
         break;
       case 2:
         EndTest();
         break;
       default:
         NOTREACHED();
         break;
     }
   }

   void AfterTest() override {
     EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
                                           LocalSurfaceId(1, kArbitraryToken)));
     EXPECT_EQ(1u, required_set_.size());
     EXPECT_TRUE(satisfied_sequence_ ==
                 SurfaceSequence(kArbitraryFrameSinkId, 1u));
   }
 };

 SINGLE_AND_MULTI_THREAD_TEST_F(SurfaceLayerSwapPromiseWithDraw);

 // Check that SurfaceSequence is sent through swap promise and resolved when
 // swap fails.
 class SurfaceLayerSwapPromiseWithoutDraw : public SurfaceLayerSwapPromise {
  public:
   SurfaceLayerSwapPromiseWithoutDraw() : SurfaceLayerSwapPromise() {}

   DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
                                    LayerTreeHostImpl::FrameData* frame,
                                    DrawResult draw_result) override {
     return DRAW_ABORTED_MISSING_HIGH_RES_CONTENT;
   }

   void ChangeTree() override {
     ++commit_count_;
     switch (commit_count_) {
       case 1:
         // Remove SurfaceLayer from tree to cause SwapPromise to be created.
         layer_tree_host()->SetRootLayer(blank_layer_);
         break;
       case 2:
         layer_tree_host()->SetNeedsCommit();
         break;
       default:
         EndTest();
         break;
     }
   }

   void AfterTest() override {
     EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
                                           LocalSurfaceId(1, kArbitraryToken)));
     EXPECT_EQ(1u, required_set_.size());
     EXPECT_TRUE(satisfied_sequence_ ==
                 SurfaceSequence(kArbitraryFrameSinkId, 1u));
   }
 };

 MULTI_THREAD_TEST_F(SurfaceLayerSwapPromiseWithoutDraw);

 }  // namespace
 }  // namespace cc
	// 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 <stdint.h>

	#include <set>
	#include <vector>

	#include "base/location.h"
	#include "base/run_loop.h"
	#include "base/single_thread_task_runner.h"
	#include "base/threading/thread_task_runner_handle.h"
	#include "cc/animation/animation_host.h"
	#include "cc/layers/solid_color_layer.h"
	#include "cc/layers/surface_layer.h"
	#include "cc/layers/surface_layer_impl.h"
	#include "cc/output/compositor_frame.h"
	#include "cc/surfaces/sequence_surface_reference_factory.h"
	#include "cc/surfaces/surface_info.h"
	#include "cc/test/fake_impl_task_runner_provider.h"
	#include "cc/test/fake_layer_tree_host.h"
	#include "cc/test/fake_layer_tree_host_client.h"
	#include "cc/test/fake_layer_tree_host_impl.h"
	#include "cc/test/fake_output_surface.h"
	#include "cc/test/layer_tree_test.h"
	#include "cc/test/test_task_graph_runner.h"
	#include "cc/trees/layer_tree_host.h"
	#include "testing/gmock/include/gmock/gmock.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace cc {
	namespace {

	static constexpr FrameSinkId kArbitraryFrameSinkId(1, 1);

	class SurfaceLayerTest : public testing::Test {
	public:
	SurfaceLayerTest()
	: host_impl_(&task_runner_provider_, &task_graph_runner_) {}

	protected:
	void SetUp() override {
	animation_host_ = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
	layer_tree_host_ = FakeLayerTreeHost::Create(
	&fake_client_, &task_graph_runner_, animation_host_.get());
	layer_tree_host_->SetViewportSize(gfx::Size(10, 10));
	host_impl_.CreatePendingTree();
	}

	void TearDown() override {
	if (layer_tree_host_) {
	layer_tree_host_->SetRootLayer(nullptr);
	layer_tree_host_ = nullptr;
	}
	}

	FakeLayerTreeHostClient fake_client_;
	FakeImplTaskRunnerProvider task_runner_provider_;
	TestTaskGraphRunner task_graph_runner_;
	std::unique_ptr<AnimationHost> animation_host_;
	std::unique_ptr<FakeLayerTreeHost> layer_tree_host_;
	FakeLayerTreeHostImpl host_impl_;
	};

	class TestSurfaceReferenceFactory : public SequenceSurfaceReferenceFactory {
	protected:
	void SatisfySequence(const SurfaceSequence& seq) const override {
	*out_seq_ = seq;
	}

	void RequireSequence(const SurfaceId& id,
	const SurfaceSequence& seq) const override {
	*out_id_ = id;
	out_set_->insert(seq);
	}

	public:
	TestSurfaceReferenceFactory(SurfaceSequence* out_seq,
	SurfaceId* out_id,
	std::set<SurfaceSequence>* out_set)
	: out_seq_(out_seq), out_id_(out_id), out_set_(out_set) {}

	protected:
	~TestSurfaceReferenceFactory() override = default;

	private:
	SurfaceSequence* out_seq_;
	SurfaceId* out_id_;
	std::set<SurfaceSequence>* out_set_;

	DISALLOW_COPY_AND_ASSIGN(TestSurfaceReferenceFactory);
	};

	// Check that one surface can be referenced by multiple LayerTreeHosts, and
	// each will create its own SurfaceSequence that's satisfied on destruction.
	TEST_F(SurfaceLayerTest, MultipleFramesOneSurface) {
	const base::UnguessableToken kArbitraryToken =
	base::UnguessableToken::Create();
	SurfaceSequence blank_change; // Receives sequence if commit doesn't happen.

	SurfaceId required_id;
	std::set<SurfaceSequence> required_seq;
	scoped_refptr<SurfaceReferenceFactory> ref_factory =
	new TestSurfaceReferenceFactory(&blank_change, &required_id,
	&required_seq);
	auto layer = SurfaceLayer::Create(ref_factory);
	SurfaceInfo info(
	SurfaceId(kArbitraryFrameSinkId, LocalSurfaceId(1, kArbitraryToken)), 1.f,
	gfx::Size(1, 1));
	layer->SetPrimarySurfaceInfo(info);
	layer_tree_host_->GetSurfaceSequenceGenerator()->set_frame_sink_id(
	FrameSinkId(1, 1));
	layer_tree_host_->SetRootLayer(layer);

	auto animation_host2 = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
	std::unique_ptr<FakeLayerTreeHost> layer_tree_host2 =
	FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_,
	animation_host2.get());
	auto layer2 = SurfaceLayer::Create(std::move(ref_factory));
	layer2->SetPrimarySurfaceInfo(info);
	layer_tree_host2->GetSurfaceSequenceGenerator()->set_frame_sink_id(
	FrameSinkId(2, 2));
	layer_tree_host2->SetRootLayer(layer2);

	// Layers haven't been removed, so no sequence should be satisfied.
	EXPECT_FALSE(blank_change.is_valid());

	SurfaceSequence expected1(FrameSinkId(1, 1), 1u);
	SurfaceSequence expected2(FrameSinkId(2, 2), 1u);

	layer_tree_host2->SetRootLayer(nullptr);
	layer_tree_host2.reset();
	animation_host2 = nullptr;

	// Layer was removed so sequence from second LayerTreeHost should be
	// satisfied.
	base::RunLoop().RunUntilIdle();
	EXPECT_TRUE(blank_change == expected2);

	// Set of sequences that need to be satisfied should include sequences from
	// both trees.
	EXPECT_TRUE(required_id == SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(1, kArbitraryToken)));
	EXPECT_EQ(2u, required_seq.size());
	EXPECT_TRUE(required_seq.count(expected1));
	EXPECT_TRUE(required_seq.count(expected2));

	layer_tree_host_->SetRootLayer(nullptr);
	layer_tree_host_.reset();

	// Layer was removed so sequence from first LayerTreeHost should be
	// satisfied.
	base::RunLoop().RunUntilIdle();
	EXPECT_TRUE(blank_change == expected1);

	// No more SurfaceSequences should have been generated that need to have be
	// satisfied.
	EXPECT_EQ(2u, required_seq.size());
	}

	// This test verifies that the primary and fallback SurfaceInfo are pushed
	// across from SurfaceLayer to SurfaceLayerImpl.
	TEST_F(SurfaceLayerTest, SurfaceInfoPushProperties) {
	SurfaceSequence blank_change;
	SurfaceId required_id;
	std::set<SurfaceSequence> required_sequences;
	scoped_refptr<SurfaceReferenceFactory> ref_factory =
	new TestSurfaceReferenceFactory(&blank_change, &required_id,
	&required_sequences);

	scoped_refptr<SurfaceLayer> layer = SurfaceLayer::Create(ref_factory);
	layer_tree_host_->SetRootLayer(layer);
	SurfaceInfo primary_info(
	SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(1, base::UnguessableToken::Create())),
	1.f, gfx::Size(1, 1));
	layer->SetPrimarySurfaceInfo(primary_info);

	std::unique_ptr<SurfaceLayerImpl> layer_impl =
	SurfaceLayerImpl::Create(host_impl_.pending_tree(), layer->id());
	layer->PushPropertiesTo(layer_impl.get());

	// Verify tha the primary SurfaceInfo is pushed through and that there is
	// no valid fallback SurfaceInfo.
	EXPECT_EQ(primary_info, layer_impl->primary_surface_info());
	EXPECT_EQ(SurfaceInfo(), layer_impl->fallback_surface_info());

	SurfaceInfo fallback_info(
	SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(2, base::UnguessableToken::Create())),
	2.f, gfx::Size(10, 10));
	layer->SetFallbackSurfaceInfo(fallback_info);
	layer->PushPropertiesTo(layer_impl.get());

	// Verify that the primary SurfaceInfo stays the same and the new fallback
	// SurfaceInfo is pushed through.
	EXPECT_EQ(primary_info, layer_impl->primary_surface_info());
	EXPECT_EQ(fallback_info, layer_impl->fallback_surface_info());
	}

	// Check that SurfaceSequence is sent through swap promise.
	class SurfaceLayerSwapPromise : public LayerTreeTest {
	public:
	SurfaceLayerSwapPromise()
	: commit_count_(0), sequence_was_satisfied_(false) {}

	void BeginTest() override {
	layer_tree_host()->GetSurfaceSequenceGenerator()->set_frame_sink_id(
	FrameSinkId(1, 1));
	layer_ = SurfaceLayer::Create(new TestSurfaceReferenceFactory(
	&satisfied_sequence_, &required_id_, &required_set_));
	SurfaceInfo info(
	SurfaceId(kArbitraryFrameSinkId, LocalSurfaceId(1, kArbitraryToken)),
	1.f, gfx::Size(1, 1));
	layer_->SetPrimarySurfaceInfo(info);

	// Layer hasn't been added to tree so no SurfaceSequence generated yet.
	EXPECT_EQ(0u, required_set_.size());

	layer_tree_host()->SetRootLayer(layer_);

	// Should have SurfaceSequence from first tree.
	SurfaceSequence expected(kArbitraryFrameSinkId, 1u);
	EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(1, kArbitraryToken)));
	EXPECT_EQ(1u, required_set_.size());
	EXPECT_TRUE(required_set_.count(expected));

	gfx::Size bounds(100, 100);
	layer_tree_host()->SetViewportSize(bounds);

	blank_layer_ = SolidColorLayer::Create();
	blank_layer_->SetIsDrawable(true);
	blank_layer_->SetBounds(gfx::Size(10, 10));

	PostSetNeedsCommitToMainThread();
	}

	virtual void ChangeTree() = 0;

	void DidCommitAndDrawFrame() override {
	base::ThreadTaskRunnerHandle::Get()->PostTask(
	FROM_HERE, base::Bind(&SurfaceLayerSwapPromise::ChangeTree,
	base::Unretained(this)));
	}

	protected:
	int commit_count_;
	bool sequence_was_satisfied_;
	scoped_refptr<SurfaceLayer> layer_;
	scoped_refptr<Layer> blank_layer_;
	SurfaceSequence satisfied_sequence_;

	SurfaceId required_id_;
	std::set<SurfaceSequence> required_set_;
	const base::UnguessableToken kArbitraryToken =
	base::UnguessableToken::Create();
	};

	// Check that SurfaceSequence is sent through swap promise.
	class SurfaceLayerSwapPromiseWithDraw : public SurfaceLayerSwapPromise {
	public:
	void ChangeTree() override {
	++commit_count_;
	switch (commit_count_) {
	case 1:
	// Remove SurfaceLayer from tree to cause SwapPromise to be created.
	layer_tree_host()->SetRootLayer(blank_layer_);
	break;
	case 2:
	EndTest();
	break;
	default:
	NOTREACHED();
	break;
	}
	}

	void AfterTest() override {
	EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(1, kArbitraryToken)));
	EXPECT_EQ(1u, required_set_.size());
	EXPECT_TRUE(satisfied_sequence_ ==
	SurfaceSequence(kArbitraryFrameSinkId, 1u));
	}
	};

	SINGLE_AND_MULTI_THREAD_TEST_F(SurfaceLayerSwapPromiseWithDraw);

	// Check that SurfaceSequence is sent through swap promise and resolved when
	// swap fails.
	class SurfaceLayerSwapPromiseWithoutDraw : public SurfaceLayerSwapPromise {
	public:
	SurfaceLayerSwapPromiseWithoutDraw() : SurfaceLayerSwapPromise() {}

	DrawResult PrepareToDrawOnThread(LayerTreeHostImpl* host_impl,
	LayerTreeHostImpl::FrameData* frame,
	DrawResult draw_result) override {
	return DRAW_ABORTED_MISSING_HIGH_RES_CONTENT;
	}

	void ChangeTree() override {
	++commit_count_;
	switch (commit_count_) {
	case 1:
	// Remove SurfaceLayer from tree to cause SwapPromise to be created.
	layer_tree_host()->SetRootLayer(blank_layer_);
	break;
	case 2:
	layer_tree_host()->SetNeedsCommit();
	break;
	default:
	EndTest();
	break;
	}
	}

	void AfterTest() override {
	EXPECT_TRUE(required_id_ == SurfaceId(kArbitraryFrameSinkId,
	LocalSurfaceId(1, kArbitraryToken)));
	EXPECT_EQ(1u, required_set_.size());
	EXPECT_TRUE(satisfied_sequence_ ==
	SurfaceSequence(kArbitraryFrameSinkId, 1u));
	}
	};

	MULTI_THREAD_TEST_F(SurfaceLayerSwapPromiseWithoutDraw);

	} // namespace
	} // namespace cc