content: Remove blimp compositing dependencies.

content/renderer/gpu/render_widget_compositor.h

Index: content/renderer/gpu/render_widget_compositor.h
diff --git a/content/renderer/gpu/render_widget_compositor.h b/content/renderer/gpu/render_widget_compositor.h
index 761e5a2eeacb690a8097b990c7b028bb64ff4b7c..cd3623b8b80fdffa348e47e27c20dde6b0034ab1 100644
--- a/content/renderer/gpu/render_widget_compositor.h
+++ b/content/renderer/gpu/render_widget_compositor.h
@@ -19,7 +19,6 @@
 #include "cc/trees/layer_tree_settings.h"
 #include "cc/trees/swap_promise_monitor.h"
 #include "content/common/content_export.h"
-#include "content/public/renderer/remote_proto_channel.h"
 #include "content/renderer/gpu/compositor_dependencies.h"
 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
 #include "ui/gfx/geometry/rect.h"
@@ -34,9 +33,6 @@ class AnimationHost;
 class InputHandler;
 class Layer;
 class LayerTreeHost;
-namespace proto {
-class CompositorMessage;
-}
 }
 
 namespace gfx {
@@ -55,8 +51,7 @@ struct ScreenInfo;
 class CONTENT_EXPORT RenderWidgetCompositor
     : NON_EXPORTED_BASE(public blink::WebLayerTreeView),
       NON_EXPORTED_BASE(public cc::LayerTreeHostClient),
-      NON_EXPORTED_BASE(public cc::LayerTreeHostSingleThreadClient),
-      public RemoteProtoChannel {
+      NON_EXPORTED_BASE(public cc::LayerTreeHostSingleThreadClient) {
  public:
   // Attempt to construct and initialize a compositor instance for the widget
   // with the given settings. Returns NULL if initialization fails.
@@ -106,7 +101,6 @@ class CONTENT_EXPORT RenderWidgetCompositor
       const base::Callback<void(std::unique_ptr<base::Value>)>& callback);
   bool SendMessageToMicroBenchmark(int id, std::unique_ptr<base::Value> value);
   void SetFrameSinkId(const cc::FrameSinkId& frame_sink_id);
-  void OnHandleCompositorProto(const std::vector<uint8_t>& proto);
   void SetPaintedDeviceScaleFactor(float device_scale);
   void SetDeviceColorSpace(const gfx::ColorSpace& color_space);
 
@@ -197,10 +191,6 @@ class CONTENT_EXPORT RenderWidgetCompositor
   void DidSubmitCompositorFrame() override;
   void DidLoseCompositorFrameSink() override;
 
-  // RemoteProtoChannel implementation.
-  void SetProtoReceiver(ProtoReceiver* receiver) override;
-  void SendCompositorProto(const cc::proto::CompositorMessage& proto) override;
-
   enum {
     COMPOSITOR_FRAME_SINK_RETRIES_BEFORE_FALLBACK = 4,
     MAX_COMPOSITOR_FRAME_SINK_RETRIES = 5,
@@ -231,8 +221,6 @@ class CONTENT_EXPORT RenderWidgetCompositor
 
   blink::WebLayoutAndPaintAsyncCallback* layout_and_paint_async_callback_;
 
-  RemoteProtoChannel::ProtoReceiver* remote_proto_channel_receiver_;
-
   cc::FrameSinkId frame_sink_id_;
 
   base::WeakPtrFactory<RenderWidgetCompositor> weak_factory_;