Expose Blimp dependencies to the embedder

blimp/client/feature/compositor/blimp_compositor.h

 // Copyright 2015 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 BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_COMPOSITOR_H_
 #define BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_COMPOSITOR_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 11 matching lines @@
 namespace base {
 class SingleThreadTaskRunner;
 class Thread;
 }  // namespace base
 
 namespace cc {
 namespace proto {
 class CompositorMessage;
 class InitializeImpl;
 }  // namespace proto
+
+class ContextProvider;
 class Layer;
 class LayerTreeHost;
+class LayerTreeSettings;
 class Surface;
+class SurfaceFactory;
 class SurfaceId;
 class SurfaceIdAllocator;
-class SurfaceFactory;
-class SurfaceManager;
 }  // namespace cc
 
-namespace gpu {
-class GpuMemoryBufferManager;
-}  // namespace gpu
-
 namespace blimp {
 class BlimpMessage;
 
 namespace client {
 
+class BlimpCompositorDependencies;
+class CompositorDependencies;
+
 // The BlimpCompositorClient provides the BlimpCompositor with the necessary
 // dependencies for cc::LayerTreeHost owned by this compositor and for
 // communicating the compositor and input messages to the corresponding
 // render widget of this compositor on the engine.
 class BlimpCompositorClient {
  public:
-  // These methods should provide the dependencies for cc::LayerTreeHost for
-  // this compositor.
-  virtual cc::LayerTreeSettings* GetLayerTreeSettings() = 0;
-  virtual scoped_refptr<base::SingleThreadTaskRunner>
-  GetCompositorTaskRunner() = 0;
-  virtual cc::TaskGraphRunner* GetTaskGraphRunner() = 0;
-  virtual gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;
-  virtual cc::ImageSerializationProcessor* GetImageSerializationProcessor() = 0;
-
   // Should send web gesture events which could not be handled locally by the
   // compositor to the engine.
   virtual void SendWebGestureEvent(
       int render_widget_id,
       const blink::WebGestureEvent& gesture_event) = 0;
 
   // Should send the compositor messages from the remote client LayerTreeHost of
   // this compositor to the corresponding remote server LayerTreeHost.
   virtual void SendCompositorMessage(
       int render_widget_id,
@@ skipping 12 matching lines @@
 // engine. The lifetime of this compositor is controlled by its corresponding
 // RenderWidget.
 // This class should only be accessed from the main thread.
 class BlimpCompositor : public cc::LayerTreeHostClient,
                         public cc::RemoteProtoChannel,
                         public BlimpInputManagerClient,
                         public BlimpOutputSurfaceClient,
                         public cc::SurfaceFactoryClient {
  public:
   BlimpCompositor(const int render_widget_id,
-                  cc::SurfaceManager* surface_manager,
-                  uint32_t surface_client_id,
+                  BlimpCompositorDependencies* compositor_dependencies,
                   BlimpCompositorClient* client);
 
   ~BlimpCompositor() override;
 
   virtual void SetVisible(bool visible);
 
   // Forwards the touch event to the |input_manager_|.
   // virtual for testing.
   virtual bool OnTouchEvent(const ui::MotionEvent& motion_event);
 
   // Called to forward the compositor message from the remote server
   // LayerTreeHost of the render widget for this compositor.
   // virtual for testing.
   virtual void OnCompositorMessageReceived(
       std::unique_ptr<cc::proto::CompositorMessage> message);
 
+  // Called when the a ContextProvider has been created by the
+  // CompositorDependencies class.  If |host_| is waiting on an OutputSurface
+  // this will build one for it.
+  void OnContextProviderCreated(
+      const scoped_refptr<cc::ContextProvider>& provider);
+
   scoped_refptr<cc::Layer> layer() const { return layer_; }
 
   int render_widget_id() const { return render_widget_id_; }
 
  private:
   friend class BlimpCompositorForTesting;
 
   // LayerTreeHostClient implementation.
   void WillBeginMainFrame() override {}
   void DidBeginMainFrame() override {}
   void BeginMainFrame(const cc::BeginFrameArgs& args) override {}
   void BeginMainFrameNotExpectedSoon() override {}
   void UpdateLayerTreeHost() override {}
   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
                            const gfx::Vector2dF& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
   void RequestNewOutputSurface() override;
+  void DidInitializeOutputSurface() override;
   // TODO(khushalsagar): Need to handle context initialization failures.
-  void DidInitializeOutputSurface() override {}
   void DidFailToInitializeOutputSurface() override {}
   void WillCommit() override {}
   void DidCommit() override {}
   void DidCommitAndDrawFrame() override;
   void DidCompleteSwapBuffers() override {}
   void DidCompletePageScaleAnimation() override {}
 
   // RemoteProtoChannel implementation.
   void SetProtoReceiver(ProtoReceiver* receiver) override;
   void SendCompositorProto(const cc::proto::CompositorMessage& proto) override;
 
   // BlimpInputManagerClient implementation.
   void SendWebGestureEvent(
       const blink::WebGestureEvent& gesture_event) override;
 
   // BlimpOutputSurfaceClient implementation.
   void BindToOutputSurface(
       base::WeakPtr<BlimpOutputSurface> output_surface) override;
   void SwapCompositorFrame(cc::CompositorFrame frame) override;
   void UnbindOutputSurface() override;
 
   // SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override {}
 
+  // Helper method to get the embedder dependencies.
+  CompositorDependencies* GetEmbedderDeps();
+
   // TODO(khushalsagar): Move all of this to the |DocumentView| or another
   // platform specific class. So we use the DelegatedFrameHostAndroid like the
   // RenderWidgetHostViewAndroid.
   void DestroyDelegatedContent();
 
   // Helper method to build the internal CC LayerTreeHost instance from
   // |message|.
   void CreateLayerTreeHost(
       const cc::proto::InitializeImpl& initialize_message);
 
   // Helper method to destroy the internal CC LayerTreeHost instance and all its
   // associated state.
   void DestroyLayerTreeHost();
 
   // The unique identifier for the render widget for this compositor.
   const int render_widget_id_;
 
   BlimpCompositorClient* client_;
 
+  BlimpCompositorDependencies* compositor_dependencies_;
+
   std::unique_ptr<cc::LayerTreeHost> host_;
 
   // Whether or not |host_| should be visible.  This is stored in case |host_|
   // is null when SetVisible() is called.
   bool host_should_be_visible_;
 
   // The SurfaceFactory is bound to the lifetime of the BlimpOutputSurface. When
   // detached, the surface factory will be destroyed.
   std::unique_ptr<cc::SurfaceFactory> surface_factory_;
   base::WeakPtr<BlimpOutputSurface> output_surface_;
 
+  // Whether or not |host_| has asked for an output surface.
+  bool output_surface_request_pending_;
+
   // Data for the current frame.
   cc::SurfaceId surface_id_;
   gfx::Size current_surface_size_;
 
-  scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner_;
   base::ThreadChecker thread_checker_;
 
   // Surfaces related stuff and layer which holds the delegated content from the
   // compositor.
-  cc::SurfaceManager* surface_manager_;
   std::unique_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
   scoped_refptr<cc::Layer> layer_;
 
   // To be notified of any incoming compositor protos that are specifically sent
   // to |render_widget_id_|.
   cc::RemoteProtoChannel::ProtoReceiver* remote_proto_channel_receiver_;
 
   // Handles input events for the current render widget. The lifetime of the
   // input manager is tied to the lifetime of the |host_| which owns the
   // cc::InputHandler. The input events are forwarded to this input handler by
   // the manager to be handled by the client compositor for the current render
   // widget.
   std::unique_ptr<BlimpInputManager> input_manager_;
 
-  base::WeakPtrFactory<BlimpCompositor> weak_factory_;
+  base::WeakPtrFactory<BlimpCompositor> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpCompositor);
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_FEATURE_COMPOSITOR_BLIMP_COMPOSITOR_H_