Move compositor InputHandler from RenderViewImpl to RenderWidget.

content/renderer/render_widget.h

Index: content/renderer/render_widget.h
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index 87866408934b1d6e9a731f74ebec8a9637f40a4c..1756c64c9ef5d95d86e0a12c6e5bd688e0cf52b2 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -17,6 +17,7 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
@@ -64,12 +65,14 @@ namespace blink {
 namespace scheduler {
 class RenderWidgetSchedulingState;
 }
+struct WebActiveWheelFlingParameters;
 struct WebDeviceEmulationParams;
 class WebFrameWidget;
 class WebGestureEvent;
 class WebLocalFrame;
 class WebMouseEvent;
 class WebNode;
+class WebURL;
 struct WebPoint;
 }
 
@@ -395,6 +398,9 @@ class CONTENT_EXPORT RenderWidget
   // When emulated, this returns original device scale factor.
   float GetOriginalDeviceScaleFactor() const;
 
+  virtual void TransferActiveWheelFlingAnimation(
+      const blink::WebActiveWheelFlingParameters& params) {}
+
  protected:
   // Friend RefCounted so that the dtor can be non-public. Using this class
   // without ref-counting is an error.
@@ -508,6 +514,17 @@ class CONTENT_EXPORT RenderWidget
 
   // Called by the browser process to update text input state.
   void OnRequestTextInputStateUpdate();
+
+  // Declared here to allow use of RenderWidget weak pointer. Overriden in
+  // RenderViewImpl.
+  virtual void LaunchAndroidContentIntent(const GURL& intent,
+                                          size_t request_id,
+                                          bool is_main_frame) {}
+
+  // Utility function so LaunchAndroidContentIntent can remain protected.
+  void scheduleContentIntentForRenderView(const blink::WebURL& intent,
+                                          bool is_main_frame,
+                                          size_t expected_content_intent_id);
 #endif
 
   // Called by the browser process to update the cursor and composition
@@ -787,6 +804,8 @@ class CONTENT_EXPORT RenderWidget
   // Wraps the |webwidget_| as a MouseLockDispatcher::LockTarget interface.
   std::unique_ptr<MouseLockDispatcher::LockTarget> webwidget_mouse_lock_target_;
 
+  bool has_added_input_handler_;
+
  private:
   // Applies/Removes the DevTools device emulation transformation to/from a
   // window rect.
@@ -814,6 +833,8 @@ class CONTENT_EXPORT RenderWidget
   // Will be cleared as soon as the next key event is processed.
   EditCommands edit_commands_;
 
+  base::WeakPtrFactory<RenderWidget> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidget);
 };