[Extensions] Clean up the handling of ExtensionHostMsg_Request

extensions/browser/api/extensions_api_client.cc

 // Copyright 2014 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 "extensions/browser/api/extensions_api_client.h"
 
 #include "base/logging.h"
 #include "extensions/browser/api/device_permissions_prompt.h"
 #include "extensions/browser/api/virtual_keyboard_private/virtual_keyboard_delegate.h"
 #include "extensions/browser/api/web_request/web_request_event_router_delegate.h"
@@ skipping 15 matching lines @@
 ExtensionsAPIClient* ExtensionsAPIClient::Get() { return g_instance; }
 
 void ExtensionsAPIClient::AddAdditionalValueStoreCaches(
     content::BrowserContext* context,
     const scoped_refptr<SettingsStorageFactory>& factory,
     const scoped_refptr<base::ObserverListThreadSafe<SettingsObserver>>&
         observers,
     std::map<settings_namespace::Namespace, ValueStoreCache*>* caches) {
 }
 
+void ExtensionsAPIClient::AttachWebContentsHelpers(
+    content::WebContents* web_contents) const {
+}
+
 AppViewGuestDelegate* ExtensionsAPIClient::CreateAppViewGuestDelegate() const {
   return NULL;
 }
 
 ExtensionOptionsGuestDelegate*
 ExtensionsAPIClient::CreateExtensionOptionsGuestDelegate(
     ExtensionOptionsGuest* guest) const {
   return NULL;
 }
 
-ExtensionViewGuestDelegate*
-ExtensionsAPIClient::CreateExtensionViewGuestDelegate(
-    ExtensionViewGuest* guest) const {
-  return NULL;
-}
-
 scoped_ptr<MimeHandlerViewGuestDelegate>
 ExtensionsAPIClient::CreateMimeHandlerViewGuestDelegate(
     MimeHandlerViewGuest* guest) const {
   return scoped_ptr<MimeHandlerViewGuestDelegate>();
 }
 
 WebViewGuestDelegate* ExtensionsAPIClient::CreateWebViewGuestDelegate(
     WebViewGuest* web_view_guest) const {
   return NULL;
 }
@@ skipping 26 matching lines @@
 ExtensionsAPIClient::CreateVirtualKeyboardDelegate() const {
   return nullptr;
 }
 
 ManagementAPIDelegate* ExtensionsAPIClient::CreateManagementAPIDelegate()
     const {
   return nullptr;
 }
 
 }  // namespace extensions