[Extensions] Clean up the handling of ExtensionHostMsg_Request

extensions/browser/api/extensions_api_client.h

 // 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.
 
 #ifndef EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_
 #define EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_
 
 #include <map>
 
 #include "base/memory/ref_counted.h"
@@ skipping 13 matching lines @@
 class WebContents;
 }
 
 namespace extensions {
 
 class AppViewGuestDelegate;
 class ContentRulesRegistry;
 class DevicePermissionsPrompt;
 class ExtensionOptionsGuest;
 class ExtensionOptionsGuestDelegate;
-class ExtensionViewGuest;
-class ExtensionViewGuestDelegate;
 class ManagementAPIDelegate;
 class MimeHandlerViewGuest;
 class MimeHandlerViewGuestDelegate;
 class WebViewGuest;
 class WebViewGuestDelegate;
 class WebViewPermissionHelper;
 class WebViewPermissionHelperDelegate;
 class WebRequestEventRouterDelegate;
 class RulesCacheDelegate;
 class SettingsObserver;
@@ skipping 19 matching lines @@
 
   // Add any additional value store caches (e.g. for chrome.storage.managed)
   // to |caches|. By default adds nothing.
   virtual void AddAdditionalValueStoreCaches(
       content::BrowserContext* context,
       const scoped_refptr<SettingsStorageFactory>& factory,
       const scoped_refptr<base::ObserverListThreadSafe<SettingsObserver>>&
           observers,
       std::map<settings_namespace::Namespace, ValueStoreCache*>* caches);
 
+  // Attaches any extra web contents helpers (like ExtensionWebContentsObserver)
+  // to |web_contents|.
+  virtual void AttachWebContentsHelpers(content::WebContents* web_contents)
+      const;
+
   // Creates the AppViewGuestDelegate.
   virtual AppViewGuestDelegate* CreateAppViewGuestDelegate() const;
 
   // Returns a delegate for ExtensionOptionsGuest. The caller owns the returned
   // ExtensionOptionsGuestDelegate.
   virtual ExtensionOptionsGuestDelegate* CreateExtensionOptionsGuestDelegate(
       ExtensionOptionsGuest* guest) const;
 
-  // Returns a delegate for ExtensionViewGuest. The caller owns the returned
-  // ExtensionViewGuestDelegate.
-  virtual ExtensionViewGuestDelegate* CreateExtensionViewGuestDelegate(
-      ExtensionViewGuest* guest) const;
-
   // Creates a delegate for MimeHandlerViewGuest.
   virtual scoped_ptr<MimeHandlerViewGuestDelegate>
       CreateMimeHandlerViewGuestDelegate(MimeHandlerViewGuest* guest) const;
 
   // Returns a delegate for some of WebViewGuest's behavior. The caller owns the
   // returned WebViewGuestDelegate.
   virtual WebViewGuestDelegate* CreateWebViewGuestDelegate (
       WebViewGuest* web_view_guest) const;
 
   // Returns a delegate for some of WebViewPermissionHelper's behavior. The
@@ skipping 23 matching lines @@
   // Creates a delegate for handling the management extension api.
   virtual ManagementAPIDelegate* CreateManagementAPIDelegate() const;
 
   // NOTE: If this interface gains too many methods (perhaps more than 20) it
   // should be split into one interface per API.
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_EXTENSIONS_API_CLIENT_H_