| // Copyright 2020 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. |
| |
| #ifndef CONTENT_RENDERER_VARIATIONS_RENDER_THREAD_OBSERVER_H_ |
| #define CONTENT_RENDERER_VARIATIONS_RENDER_THREAD_OBSERVER_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "components/variations/variations.mojom.h" |
| #include "content/common/renderer_variations_configuration.mojom.h" |
| #include "content/public/renderer/render_thread_observer.h" |
| #include "mojo/public/cpp/bindings/associated_receiver.h" |
| #include "mojo/public/cpp/bindings/pending_associated_receiver.h" |
| #include "mojo/public/cpp/bindings/pending_receiver.h" |
| #include "mojo/public/cpp/bindings/receiver.h" |
| #include "third_party/blink/public/common/loader/url_loader_throttle.h" |
| #include "url/origin.h" |
| |
| namespace content { |
| |
| // This is the renderer side of the FieldTrialSynchronizer which applies |
| // field trial group settings. |
| class VariationsRenderThreadObserver |
| : public content::RenderThreadObserver, |
| public mojom::RendererVariationsConfiguration { |
| public: |
| VariationsRenderThreadObserver(); |
| ~VariationsRenderThreadObserver() override; |
| |
| // Appends throttles if the browser has sent a variations header to the |
| // renderer. |top_frame_origin| is for the top frame of a request-initiating |
| // frame. |
| static void AppendThrottleIfNeeded( |
| const url::Origin& top_frame_origin, |
| std::vector<std::unique_ptr<blink::URLLoaderThrottle>>* throttles); |
| |
| // content::RenderThreadObserver: |
| void RegisterMojoInterfaces( |
| blink::AssociatedInterfaceRegistry* associated_interfaces) override; |
| void UnregisterMojoInterfaces( |
| blink::AssociatedInterfaceRegistry* associated_interfaces) override; |
| |
| // content::mojom::RendererConfiguration: |
| void SetVariationsHeaders( |
| variations::mojom::VariationsHeadersPtr variations_headers) override; |
| void SetFieldTrialGroup(const std::string& trial_name, |
| const std::string& group_name) override; |
| |
| private: |
| mojo::AssociatedReceiver<mojom::RendererVariationsConfiguration> |
| renderer_configuration_receiver_{this}; |
| |
| void OnRendererConfigurationAssociatedRequest( |
| mojo::PendingAssociatedReceiver<mojom::RendererVariationsConfiguration> |
| receiver); |
| |
| DISALLOW_COPY_AND_ASSIGN(VariationsRenderThreadObserver); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_VARIATIONS_RENDER_THREAD_OBSERVER_H_ |