Remove dead WebCompositorInputHandler related code

content/renderer/render_view_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/auto_reset.h"
@@ skipping 2599 matching lines @@
       RenderThreadImpl::current()->input_handler_manager();
   if (input_handler_manager) {
      input_handler_manager->AddInputHandler(
         routing_id_,
         compositor_->GetInputHandler(),
         AsWeakPtr());
   }
 #endif
 
   RenderWidget::didActivateCompositor(input_handler_identifier);
-
-  FOR_EACH_OBSERVER(RenderViewObserver, observers_,
-                    DidActivateCompositor(input_handler_identifier));
 }
 
 void RenderViewImpl::didHandleGestureEvent(
     const WebGestureEvent& event,
     bool event_cancelled) {
   RenderWidget::didHandleGestureEvent(event, event_cancelled);
   FOR_EACH_OBSERVER(RenderViewObserver, observers_,
                     DidHandleGestureEvent(event));
 }
 
@@ skipping 3907 matching lines @@
     WebURL url = icon_urls[i].iconURL();
     if (!url.isEmpty())
       urls.push_back(FaviconURL(url,
                                 ToFaviconType(icon_urls[i].iconType())));
   }
   SendUpdateFaviconURL(urls);
 }
 
 
 }  // namespace content