Removed sending of the following IPC messages from chrome and added API's on the RenderViewHost

content/browser/tab_contents/tab_contents.cc

 // Copyright (c) 2011 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/browser/tab_contents/tab_contents.h"
 
 #include <cmath>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 1132 matching lines @@
   delegate()->WebIntentDispatch(this, message.routing_id(), intent, intent_id);
 }
 
 void TabContents::OnFindReply(int request_id,
                               int number_of_matches,
                               const gfx::Rect& selection_rect,
                               int active_match_ordinal,
                               bool final_update) {
   delegate()->FindReply(this, request_id, number_of_matches, selection_rect,
                         active_match_ordinal, final_update);
+  // Send a notification to the renderer that we are ready to receive more
+  // results from the scoping effort of the Find operation. The FindInPage
+  // scoping is asynchronous and periodically sends results back up to the
+  // browser using IPC. In an effort to not spam the browser we have the
+  // browser send an ACK for each FindReply message and have the renderer
+  // queue up the latest status message while waiting for this ACK.
+  render_view_host()->Send(
+      new ViewMsg_FindReplyACK(render_view_host()->routing_id()));
 }
 
 void TabContents::OnCrashedPlugin(const FilePath& plugin_path) {
   delegate()->CrashedPlugin(this, plugin_path);
 }
 
 void TabContents::OnAppCacheAccessed(const GURL& manifest_url,
                                      bool blocked_by_policy) {
   // Notify observers about navigation.
   FOR_EACH_OBSERVER(TabContentsObserver, observers_,
@@ skipping 852 matching lines @@
 }
 
 void TabContents::SwapInRenderViewHost(RenderViewHost* rvh) {
   render_manager_.SwapInRenderViewHost(rvh);
 }
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = view()->CreateViewForWidget(rvh);
   rwh_view->SetSize(view()->GetContainerSize());
 }