Reapplies all the IPC system work (reverts the revert r56272).

chrome/common/resource_dispatcher_unittest.cc

 // Copyright (c) 2010 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 <string>
 #include <vector>
 
 #include "base/message_loop.h"
 #include "base/process.h"
 #include "base/process_util.h"
 #include "base/scoped_ptr.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/resource_dispatcher.h"
+#include "net/http/http_response_headers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/appcache/appcache_interfaces.h"
 
 using webkit_glue::ResourceLoaderBridge;
 
 static const char test_page_url[] = "http://www.google.com/";
 static const char test_page_headers[] =
   "HTTP/1.1 200 OK\nContent-Type:text/html\n\n";
 static const char test_page_mime_type[] = "text/html";
 static const char test_page_charset[] = "";
@@ skipping 298 matching lines @@
   ResourceLoaderBridge* bridge = CreateBridge();
 
   bridge->Start(this);
   InitMessages();
 
   // Dispatch deferred messages.
   message_loop.RunAllPending();
   delete bridge;
 }