Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/core/page/ChromeClient.h

Index: third_party/WebKit/Source/core/page/ChromeClient.h
diff --git a/third_party/WebKit/Source/core/page/ChromeClient.h b/third_party/WebKit/Source/core/page/ChromeClient.h
index e1785e59c60e604a0a4f9e1958d2a0cc6f7816a0..87014c5f0765fc86b2d0c4ab886990ca1190f637 100644
--- a/third_party/WebKit/Source/core/page/ChromeClient.h
+++ b/third_party/WebKit/Source/core/page/ChromeClient.h
@@ -258,12 +258,13 @@ class CORE_EXPORT ChromeClient : public HostWindow {
   virtual void updateCompositedSelection(LocalFrame*,
                                          const CompositedSelection&) {}
 
-  virtual void setEventListenerProperties(WebEventListenerClass,
+  virtual void setEventListenerProperties(LocalFrame*,
+                                          WebEventListenerClass,
                                           WebEventListenerProperties) = 0;
   virtual WebEventListenerProperties eventListenerProperties(
+      LocalFrame*,
       WebEventListenerClass) const = 0;
-  virtual void setHasScrollEventHandlers(bool) = 0;
-  virtual bool hasScrollEventHandlers() const = 0;
+  virtual void setHasScrollEventHandlers(LocalFrame*, bool) = 0;

[dcheng, 2017/01/18 00:13:03]

Nit: it's a bit unrelated, but it'd be nice to add some comments to these
methods describing their purpose (in a followup is OK)

[wjmaclean, 2017/01/18 14:01:24]

Acknowledged.

I tried to add something for the two setters, let me know if it seems helpful.

 
   virtual void setTouchAction(LocalFrame*, TouchAction) = 0;