Bring skydebugger closer to clean-shutdown

sky/tools/debugger/debugger.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.
 
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
 #include "mojo/public/cpp/application/connect.h"
 #include "mojo/public/cpp/application/service_provider_impl.h"
 #include "mojo/services/public/cpp/view_manager/view_manager.h"
@@ skipping 18 matching lines @@
                     public mojo::InterfaceImpl<Debugger> {
  public:
   SkyDebugger();
   virtual ~SkyDebugger();
 
   base::WeakPtr<SkyDebugger> GetWeakPtr();
 
   // Overridden from Debugger
   void NavigateToURL(const mojo::String& url) override;
   void InjectInspector() override;
+  void Shutdown() override;
 
  private:
   // Overridden from mojo::ApplicationDelegate:
   void Initialize(mojo::ApplicationImpl* app) override;
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override;
   bool ConfigureOutgoingConnection(
       mojo::ApplicationConnection* connection) override;
 
   // Overridden from mojo::ViewManagerDelegate:
@@ skipping 22 matching lines @@
 
   NavigatorHostFactory navigator_host_factory_;
 
   base::WeakPtrFactory<SkyDebugger> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SkyDebugger);
 };
 
 }  // namespace debugger
 }  // namespace sky