Make input event forwarding work in --site-per-process.

public/web/WebFrameClient.h

Index: public/web/WebFrameClient.h
diff --git a/public/web/WebFrameClient.h b/public/web/WebFrameClient.h
index df8d4a3f38ad1a176bdeadd5571548029599c078..17e7770b70bf3fa18b29158ec3d24353233ff509 100644
--- a/public/web/WebFrameClient.h
+++ b/public/web/WebFrameClient.h
@@ -67,7 +67,6 @@ class WebExternalPopupMenu;
 class WebExternalPopupMenuClient;
 class WebFormElement;
 class WebGeolocationClient;
-class WebInputEvent;
 class WebMediaPlayer;
 class WebMediaPlayerClient;
 class WebMIDIClient;
@@ -553,10 +552,6 @@ public:
     // Extensions3D.h in WebCore/platform/graphics).
     virtual void didLoseWebGLContext(WebLocalFrame*, int) { }
 
-    // FIXME: Remove this method once we have input routing in the browser
-    // process. See http://crbug.com/339659.
-    virtual void forwardInputEvent(const WebInputEvent*) { }
-
     // Send initial drawing parameters to a child frame that is being rendered out of process.
     virtual void initializeChildFrame(const WebRect& frameRect, float scaleFactor) { }