mojo: Update content handler API

sky/viewer/content_handler_impl.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 SKY_VIEWER_CONTENT_HANDLER_H_
 #define SKY_VIEWER_CONTENT_HANDLER_H_
 
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/interfaces/application/shell.mojom.h"
 #include "mojo/services/public/interfaces/content_handler/content_handler.mojom.h"
 
 namespace sky {
 class DocumentView;
 
 class ContentHandlerImpl : public mojo::InterfaceImpl<mojo::ContentHandler> {
  public:
-  ContentHandlerImpl(mojo::Shell* shell,
-                     scoped_refptr<base::MessageLoopProxy> compositor_thread);
+  ContentHandlerImpl(scoped_refptr<base::MessageLoopProxy> compositor_thread);
   virtual ~ContentHandlerImpl();
 
  private:
   // Overridden from ContentHandler:
-  virtual void OnConnect(
-      const mojo::String& url,
-      mojo::URLResponsePtr response,
-      mojo::InterfaceRequest<mojo::ServiceProvider>
-          servive_provider_request) override;
+  virtual void StartApplication(mojo::ShellPtr shell,
+                                mojo::URLResponsePtr response) override;
 
-  mojo::Shell* shell_;
   scoped_refptr<base::MessageLoopProxy> compositor_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentHandlerImpl);
 };
 
 }  // namespace sky
 
 #endif  // SKY_VIEWER_DOCUMENT_VIEW_H_