Make clicks on <a> request a navigation

sky/viewer/document_view.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_DOCUMENT_VIEW_H_
 #define SKY_VIEWER_DOCUMENT_VIEW_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/application/lazy_interface_ptr.h"
@@ skipping 66 matching lines @@
       const blink::WebString& source_name,
       unsigned source_line,
       const blink::WebString& stack_trace) override;
   void didCreateScriptContext(
       blink::WebLocalFrame*,
       v8::Handle<v8::Context>,
       int extensionGroup,
       int worldId) override;
 
   // WebViewClient methods:
-  blink::ServiceProvider* services() override;
+  blink::ServiceProvider& services() override;
 
   // Services methods:
   mojo::NavigatorHost* NavigatorHost() override;
 
   // ViewManagerDelegate methods:
   void OnEmbed(
       mojo::ViewManager* view_manager,
       mojo::View* root,
       mojo::ServiceProviderImpl* exported_services,
       scoped_ptr<mojo::ServiceProvider> imported_services) override;
@@ skipping 21 matching lines @@
   scoped_refptr<base::MessageLoopProxy> compositor_thread_;
   scoped_ptr<ScriptRunner> script_runner_;
 
   base::WeakPtrFactory<DocumentView> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(DocumentView);
 };
 
 }  // namespace sky
 
 #endif  // SKY_VIEWER_DOCUMENT_VIEW_H_