[Extensions] Clean up the handling of ExtensionHostMsg_Request

chrome/browser/extensions/chrome_extensions_browser_client.cc

 // Copyright 2013 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/chrome_extensions_browser_client.h"
 
 #include "base/command_line.h"
 #include "base/version.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/activity_log/activity_log.h"
 #include "chrome/browser/extensions/api/chrome_extensions_api_client.h"
 #include "chrome/browser/extensions/api/content_settings/content_settings_service.h"
 #include "chrome/browser/extensions/api/generated_api_registration.h"
 #include "chrome/browser/extensions/api/preference/chrome_direct_setting.h"
 #include "chrome/browser/extensions/api/preference/preference_api.h"
 #include "chrome/browser/extensions/api/runtime/chrome_runtime_api_delegate.h"
 #include "chrome/browser/extensions/chrome_app_sorting.h"
 #include "chrome/browser/extensions/chrome_component_extension_resource_manager.h"
 #include "chrome/browser/extensions/chrome_extension_host_delegate.h"
+#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/extensions/chrome_mojo_service_registration.h"
 #include "chrome/browser/extensions/chrome_process_manager_delegate.h"
 #include "chrome/browser/extensions/chrome_url_request_util.h"
 #include "chrome/browser/extensions/event_router_forwarder.h"
 #include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 #include "chrome/browser/net/chrome_net_log.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 279 matching lines @@
   chrome::VersionInfo version_info;
   base::Version browser_version = base::Version(version_info.Version());
   Version browser_min_version(min_version);
   if (browser_version.IsValid() && browser_min_version.IsValid() &&
       browser_min_version.CompareTo(browser_version) > 0) {
     return false;
   }
   return true;
 }
 
+ExtensionWebContentsObserver*
+ChromeExtensionsBrowserClient::GetExtensionWebContentsObserver(
+    content::WebContents* web_contents) {
+  return ChromeExtensionWebContentsObserver::FromWebContents(web_contents);
+}
+
 }  // namespace extensions