Move compositor InputHandler from RenderViewImpl to RenderWidget.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index 0610418fd1c887b2c6234a917927ef78991a3ac6..2738c8de01711bd6123fe45edd10844127b72a72 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -1342,14 +1342,18 @@ void FrameLoader::commitProvisionalLoad() {
   if (!prepareForCommit())
     return;
 
-  if (isLoadingMainFrame()) {
+  // If we are loading the mainframe, or a frame that is a local root, it is
+  // important to explicitly set the event listenener properties to Nothing as
+  // this triggers notificatins to the client.

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

Nit: elaborate on what sort of notifications to the client, and why they're
important to send.

[wjmaclean, 2017/01/18 14:01:23]

Done.

+  if (m_frame->isLocalRoot()) {
     m_frame->page()->chromeClient().setEventListenerProperties(
-        WebEventListenerClass::TouchStartOrMove,
+        m_frame, WebEventListenerClass::TouchStartOrMove,
         WebEventListenerProperties::Nothing);
     m_frame->page()->chromeClient().setEventListenerProperties(
-        WebEventListenerClass::MouseWheel, WebEventListenerProperties::Nothing);
+        m_frame, WebEventListenerClass::MouseWheel,
+        WebEventListenerProperties::Nothing);
     m_frame->page()->chromeClient().setEventListenerProperties(
-        WebEventListenerClass::TouchEndOrCancel,
+        m_frame, WebEventListenerClass::TouchEndOrCancel,
         WebEventListenerProperties::Nothing);
   }