[ProtocolHandlers] Add a permission bubble client for RPH requests.

chrome/browser/custom_handlers/protocol_handler_registry.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 #define CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 128 matching lines @@
   // Returns a net::URLRequestJobFactory suitable for use on the IO thread, but
   // is initialized on the UI thread.
   scoped_ptr<JobInterceptorFactory> CreateJobInterceptorFactory();
 
   // Called when a site tries to register as a protocol handler. If the request
   // can be handled silently by the registry - either to ignore the request
   // or to update an existing handler - the request will succeed. If this
   // function returns false the user needs to be prompted for confirmation.
   bool SilentlyHandleRegisterHandlerRequest(const ProtocolHandler& handler);
 
+  // Display the UI request for the site's permission to register a protocol
+  // handler.
+  void RequestPermission(content::WebContents* web_contents,
+                         const ProtocolHandler& handler);
+
   // Called when the user accepts the registration of a given protocol handler.
   void OnAcceptRegisterProtocolHandler(const ProtocolHandler& handler);
 
   // Called when the user denies the registration of a given protocol handler.
   void OnDenyRegisterProtocolHandler(const ProtocolHandler& handler);
 
   // Called when the user indicates that they don't want to be asked about the
   // given protocol handler again.
   void OnIgnoreRegisterProtocolHandler(const ProtocolHandler& handler);
 
@@ skipping 166 matching lines @@
 
   // Copy of registry data for use on the IO thread. Changes to the registry
   // are posted to the IO thread where updates are applied to this object.
   scoped_refptr<IOThreadDelegate> io_thread_delegate_;
 
   DefaultClientObserverList default_client_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(ProtocolHandlerRegistry);
 };
 #endif  // CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_