Refactor Pickle Read methods to use higher performance PickleIterator.

chrome/browser/automation/url_request_automation_job.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/automation/url_request_automation_job.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/time.h"
@@ skipping 235 matching lines @@
 net::HostPortPair URLRequestAutomationJob::GetSocketAddress() const {
   return socket_address_;
 }
 
 bool URLRequestAutomationJob::MayFilterMessage(const IPC::Message& message,
                                                int* request_id) {
   switch (message.type()) {
     case AutomationMsg_RequestStarted::ID:
     case AutomationMsg_RequestData::ID:
     case AutomationMsg_RequestEnd::ID: {
-      void* iter = NULL;
+      PickleIterator iter(message);
       if (message.ReadInt(&iter, request_id))
         return true;
       break;
     }
   }
 
   return false;
 }
 
 void URLRequestAutomationJob::OnMessage(const IPC::Message& message) {
@@ skipping 222 matching lines @@
   if (!is_done()) {
     NotifyDone(request_status_);
   }
   // Reset any pending reads.
   if (pending_buf_) {
     pending_buf_ = NULL;
     pending_buf_size_ = 0;
     NotifyReadComplete(0);
   }
 }