Begun the DCHECK() cleanup. Starting off with /src/chrome/a* and /src/chrome/...

chrome/browser/automation/url_request_automation_job.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 "chrome/browser/automation/url_request_automation_job.h"
 
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "chrome/browser/automation/automation_resource_message_filter.h"
@@ skipping 358 matching lines @@
   }
 }
 
 void URLRequestAutomationJob::Cleanup() {
   headers_ = NULL;
   mime_type_.erase();
 
   id_ = 0;
   tab_ = 0;
 
-  DCHECK(message_filter_ == NULL);
+  DCHECK(!message_filter_);
   DisconnectFromMessageFilter();
 
   pending_buf_ = NULL;
   pending_buf_size_ = 0;
 }
 
 void URLRequestAutomationJob::StartAsync() {
   DVLOG(1) << "URLRequestAutomationJob: start request: "
            << (request_ ? request_->url().spec() : "NULL request");
 
@@ skipping 92 matching lines @@
   if (!is_done()) {
     NotifyDone(request_status_);
   }
   // Reset any pending reads.
   if (pending_buf_) {
     pending_buf_ = NULL;
     pending_buf_size_ = 0;
     NotifyReadComplete(0);
   }
 }