android: Remove in-process sync compositor code path

content/browser/android/synchronous_compositor_base.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 CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_
 #define CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_
 
 #include <memory>
 
 #include "content/common/input/input_event_ack_state.h"
@@ skipping 10 matching lines @@
 namespace cc {
 struct BeginFrameArgs;
 }
 
 namespace content {
 
 class RenderWidgetHostViewAndroid;
 class WebContents;
 struct DidOverscrollParams;
 
+// TODO(boliu): Merge this into SynchronousCompositorHost.
 class SynchronousCompositorBase : public SynchronousCompositor {
  public:
   static std::unique_ptr<SynchronousCompositorBase> Create(
       RenderWidgetHostViewAndroid* rwhva,
       WebContents* web_contents);
 
   ~SynchronousCompositorBase() override {}
 
   virtual void BeginFrame(const cc::BeginFrameArgs& args) = 0;
   virtual InputEventAckState HandleInputEvent(
       const blink::WebInputEvent& input_event) = 0;
   virtual void DidOverscroll(const DidOverscrollParams& over_scroll_params) = 0;
   virtual bool OnMessageReceived(const IPC::Message& message) = 0;
 
   virtual void DidBecomeCurrent() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_SYNCHRONOUS_COMPOSITOR_BASE_H_