FBTF: Move a bunch of code to the headers and remove includes.

chrome/browser/extensions/extension_host.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 "chrome/browser/extensions/extension_host.h"
 
 #include <list>
 
 #include "app/keyboard_codes.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
+#include "base/histogram.h"
 #include "base/message_loop.h"
 #include "base/singleton.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/browser_shutdown.h"
 #include "chrome/browser/browser_window.h"
 #include "chrome/browser/browsing_instance.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/dom_ui/dom_ui_factory.h"
@@ skipping 695 matching lines @@
     // Extensions hosted in ExternalTabContainer objects may not have
     // an associated browser.
     Browser* browser = GetBrowser();
     if (browser)
       window_id = ExtensionTabUtil::GetWindowId(browser);
   } else if (extension_host_type_ != ViewType::EXTENSION_BACKGROUND_PAGE) {
     NOTREACHED();
   }
   return window_id;
 }