Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/web/ChromeClientImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 118 matching lines @@
   ColorChooser* openColorChooser(LocalFrame*,
                                  ColorChooserClient*,
                                  const Color&) override;
   DateTimeChooser* openDateTimeChooser(
       DateTimeChooserClient*,
       const DateTimeChooserParameters&) override;
   void openFileChooser(LocalFrame*, PassRefPtr<FileChooser>) override;
   void enumerateChosenDirectory(FileChooser*) override;
   void setCursor(const Cursor&, LocalFrame*) override;
   Cursor lastSetCursorForTesting() const override;
-  void setEventListenerProperties(WebEventListenerClass,
+  // The client keeps track of which touch/mousewheel event types have handlers,
+  // and if they do whether the handlers are passive and/or blocking. This

[dcheng, 2017/01/18 18:30:11]

Nit: comma after do

[wjmaclean, 2017/01/19 19:24:48]

Done.

+  // allows the client to know which optimizations can be used for the
+  // associated event classes.
+  void setEventListenerProperties(LocalFrame*,
+                                  WebEventListenerClass,
                                   WebEventListenerProperties) override;
   WebEventListenerProperties eventListenerProperties(
+      LocalFrame*,
       WebEventListenerClass) const override;
-  void setHasScrollEventHandlers(bool hasEventHandlers) override;
-  bool hasScrollEventHandlers() const override;
+  // Informs client about the existence of handlers for scroll events so
+  // appropriate scroll optimizations can be chosen.
+  void setHasScrollEventHandlers(LocalFrame*, bool hasEventHandlers) override;
   void setTouchAction(LocalFrame*, TouchAction) override;
 
   void attachRootGraphicsLayer(GraphicsLayer*, LocalFrame* localRoot) override;
 
   void attachRootLayer(WebLayer*, LocalFrame* localRoot) override;
 
   void attachCompositorAnimationTimeline(CompositorAnimationTimeline*,
                                          LocalFrame*) override;
   void detachCompositorAnimationTimeline(CompositorAnimationTimeline*,
                                          LocalFrame*) override;
@@ skipping 85 matching lines @@
 
 DEFINE_TYPE_CASTS(ChromeClientImpl,
                   ChromeClient,
                   client,
                   client->isChromeClientImpl(),
                   client.isChromeClientImpl());
 
 }  // namespace blink
 
 #endif