Some touch-event forwarding optimization.

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 <string>
 #include <vector>
@@ skipping 3202 matching lines @@
   StartNavStateSyncTimerIfNecessary();
 
   if (webview()->mainFrame() == frame)
     UpdateScrollState(frame);
 }
 
 void RenderViewImpl::numberOfWheelEventHandlersChanged(unsigned num_handlers) {
   Send(new ViewHostMsg_DidChangeNumWheelEvents(routing_id_, num_handlers));
 }
 
+void RenderViewImpl::numberOfTouchEventHandlersChanged(unsigned num_handlers) {
+  Send(new ViewHostMsg_DidChangeNumTouchEvents(routing_id_, num_handlers));
+}
+
 void RenderViewImpl::reportFindInPageMatchCount(int request_id, int count,
                                                 bool final_update) {
   int active_match_ordinal = -1;  // -1 = don't update active match ordinal
   if (!count)
     active_match_ordinal = 0;
 
   IPC::Message* msg = new ViewHostMsg_Find_Reply(
       routing_id_,
       request_id,
       count,
@@ skipping 1808 matching lines @@
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return !!RenderThreadImpl::current()->compositor_thread();
 }
 
 void RenderViewImpl::OnJavaBridgeInit() {
   DCHECK(!java_bridge_dispatcher_.get());
 #if defined(ENABLE_JAVA_BRIDGE)
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this));
 #endif
 }