Android Webview IPC-based sync compositing

content/browser/android/in_process/synchronous_compositor_impl.h

 // Copyright 2013 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_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 #define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
-#include "content/common/input/input_event_ack_state.h"
-#include "content/public/browser/android/synchronous_compositor.h"
+#include "content/browser/android/synchronous_compositor_base.h"
 #include "content/renderer/android/synchronous_compositor_external_begin_frame_source.h"
 #include "content/renderer/android/synchronous_compositor_output_surface.h"
 #include "content/renderer/input/synchronous_input_handler_proxy.h"
 #include "ipc/ipc_message.h"
 
 namespace cc {
-struct BeginFrameArgs;
 class InputHandler;
 }
 
-namespace blink {
-class WebInputEvent;
-}
-
 namespace content {
 class InputHandlerManager;
 class RenderWidgetHostViewAndroid;
 class SynchronousCompositorExternalBeginFrameSource;
 struct DidOverscrollParams;
 
 // The purpose of this class is to act as the intermediary between the various
 // components that make up the 'synchronous compositor mode' implementation and
 // expose their functionality via the SynchronousCompositor interface.
 // This class is created on the main thread but most of the APIs are called
 // from the Compositor thread.
 class SynchronousCompositorImpl
     : public SynchronousInputHandler,
-      public SynchronousCompositor,
+      public SynchronousCompositorBase,
       public SynchronousCompositorExternalBeginFrameSourceClient,
       public SynchronousCompositorOutputSurfaceClient {
  public:
   // For handling upcalls from renderer code; the process id
   // is implicitly that of the in-process renderer.
   static SynchronousCompositorImpl* FromRoutingID(int routing_id);
 
-  static scoped_ptr<SynchronousCompositorImpl> Create(
-      RenderWidgetHostViewAndroid* rwhva,
-      WebContents* web_contents);
+  static void SetGpuServiceInProc(
+      scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
+
   ~SynchronousCompositorImpl() override;
 
-  InputEventAckState HandleInputEvent(const blink::WebInputEvent& input_event);
-
   // Called by SynchronousCompositorRegistry.
   void DidInitializeRendererObjects(
       SynchronousCompositorOutputSurface* output_surface,
       SynchronousCompositorExternalBeginFrameSource* begin_frame_source,
       SynchronousInputHandlerProxy* synchronous_input_handler_proxy);
   void DidDestroyRendererObjects();
 
   // SynchronousCompositorExternalBeginFrameSourceClient overrides.
   void OnNeedsBeginFramesChange(bool needs_begin_frames) override;
 
   // SynchronousCompositorOutputSurfaceClient overrides.
   void Invalidate() override;
 
-  // Called by RenderWidgetHostViewAndroid.
-  void BeginFrame(const cc::BeginFrameArgs& args);
-
-  // SynchronousCompositor
+  // SynchronousCompositor overrides.
   scoped_ptr<cc::CompositorFrame> DemandDrawHw(
       const gfx::Size& surface_size,
       const gfx::Transform& transform,
       const gfx::Rect& viewport,
       const gfx::Rect& clip,
       const gfx::Rect& viewport_rect_for_tile_priority,
       const gfx::Transform& transform_for_tile_priority) override;
   bool DemandDrawSw(SkCanvas* canvas) override;
   void ReturnResources(const cc::CompositorFrameAck& frame_ack) override;
   void SetMemoryPolicy(size_t bytes_limit) override;
   void DidChangeRootLayerScrollOffset(
       const gfx::ScrollOffset& root_offset) override;
   void SetIsActive(bool is_active) override;
   void OnComputeScroll(base::TimeTicks animation_time) override;
 
+  // SynchronousCompositorBase overrides.
+  void BeginFrame(const cc::BeginFrameArgs& args) override;
+  InputEventAckState HandleInputEvent(
+      const blink::WebInputEvent& input_event) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
   // SynchronousInputHandler
   void SetNeedsSynchronousAnimateInput() override;
   void UpdateRootLayerState(const gfx::ScrollOffset& total_scroll_offset,
                             const gfx::ScrollOffset& max_scroll_offset,
                             const gfx::SizeF& scrollable_size,
                             float page_scale_factor,
                             float min_page_scale_factor,
                             float max_page_scale_factor) override;
 
   void DidOverscroll(const DidOverscrollParams& params);
   void DidStopFlinging();
 
  private:
+  friend class SynchronousCompositorBase;
   SynchronousCompositorImpl(RenderWidgetHostViewAndroid* rwhva,
                             SynchronousCompositorClient* client);
   void RegisterWithClient();
   void UpdateFrameMetaData(const cc::CompositorFrameMetadata& frame_info);
   void DidActivatePendingTree();
   void DeliverMessages();
   bool CalledOnValidThread() const;
   void UpdateNeedsBeginFrames();
 
   RenderWidgetHostViewAndroid* const rwhva_;
   const int routing_id_;
   SynchronousCompositorClient* const compositor_client_;
   SynchronousCompositorOutputSurface* output_surface_;
   SynchronousCompositorExternalBeginFrameSource* begin_frame_source_;
   SynchronousInputHandlerProxy* synchronous_input_handler_proxy_;
   bool registered_with_client_;
   bool is_active_;
   bool renderer_needs_begin_frames_;
   bool need_animate_input_;
 
   base::WeakPtrFactory<SynchronousCompositorImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_