Plumb ViewportMetrics change notifications around the world and back.

services/view_manager/test_server_view_delegate.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 SERVICES_VIEW_MANAGER_TEST_SERVER_VIEW_DELEGATE_H_
 #define SERVICES_VIEW_MANAGER_TEST_SERVER_VIEW_DELEGATE_H_
 
 #include "base/basictypes.h"
 #include "services/view_manager/server_view_delegate.h"
 
@@ skipping 10 matching lines @@
   void OnViewDestroyed(const ServerView* view) override;
   void OnWillChangeViewHierarchy(ServerView* view,
                                  ServerView* new_parent,
                                  ServerView* old_parent) override;
   void OnViewHierarchyChanged(const ServerView* view,
                               const ServerView* new_parent,
                               const ServerView* old_parent) override;
   void OnViewBoundsChanged(const ServerView* view,
                            const gfx::Rect& old_bounds,
                            const gfx::Rect& new_bounds) override;
+  void OnViewViewportMetricsChanged(
+      const ServerView* view,
+      const mojo::ViewportMetrics& old_metrics,
+      const mojo::ViewportMetrics& new_metrics) override;
   void OnViewSurfaceIdChanged(const ServerView* view) override;
   void OnViewReordered(const ServerView* view,
                        const ServerView* relative,
                        mojo::OrderDirection direction) override;
   void OnWillChangeViewVisibility(ServerView* view) override;
   void OnViewSharedPropertyChanged(
       const ServerView* view,
       const std::string& name,
       const std::vector<uint8_t>* new_data) override;
   void OnScheduleViewPaint(const ServerView* view) override;
 
   DISALLOW_COPY_AND_ASSIGN(TestServerViewDelegate);
 };
 
 }  // namespace view_manager
 
 #endif  // SERVICES_VIEW_MANAGER_TEST_SERVER_VIEW_DELEGATE_H_