Refactor Pickle Read methods to use higher performance PickleIterator.

chrome/browser/extensions/extension_page_capture_api.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 "chrome/browser/extensions/extension_page_capture_api.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
@@ skipping 48 matching lines @@
       base::Bind(&PageCaptureSaveAsMHTMLFunction::CreateTemporaryFile, this));
   return true;
 }
 
 bool PageCaptureSaveAsMHTMLFunction::OnMessageReceivedFromRenderView(
     const IPC::Message& message) {
   if (message.type() != ExtensionHostMsg_ResponseAck::ID)
     return false;
 
   int message_request_id;
-  void* iter = NULL;
+  PickleReader iter(message);
   if (!message.ReadInt(&iter, &message_request_id)) {
     NOTREACHED() << "malformed extension message";
     return true;
   }
 
   if (message_request_id != request_id())
     return false;
 
   // The extension process has processed the response and has created a
   // reference to the blob, it is safe for us to go away.
@@ skipping 92 matching lines @@
 WebContents* PageCaptureSaveAsMHTMLFunction::GetWebContents() {
   Browser* browser = NULL;
   TabContentsWrapper* tab_contents_wrapper = NULL;
 
   if (!ExtensionTabUtil::GetTabById(tab_id_, profile(), include_incognito(),
       &browser, NULL, &tab_contents_wrapper, NULL)) {
     return NULL;
   }
   return tab_contents_wrapper->web_contents();
 }