Plumb ViewportMetrics change notifications around the world and back.

mojo/services/view_manager/public/cpp/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 MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_H_
 #define MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 135 matching lines @@
                                  int64 value,
                                  int64 default_value);
   int64 GetLocalPropertyInternal(const void* key, int64 default_value) const;
 
   void LocalDestroy();
   void LocalAddChild(View* child);
   void LocalRemoveChild(View* child);
   // Returns true if the order actually changed.
   bool LocalReorder(View* relative, OrderDirection direction);
   void LocalSetBounds(const Rect& old_bounds, const Rect& new_bounds);
+  void LocalSetViewportMetrics(const ViewportMetrics& old_metrics,
+                               const ViewportMetrics& new_metrics);
   void LocalSetDrawn(bool drawn);
 
   // Methods implementing visibility change notifications. See ViewObserver
   // for more details.
   void NotifyViewVisibilityChanged(View* target);
   // Notifies this view's observers. Returns false if |this| was deleted during
   // the call (by an observer), otherwise true.
   bool NotifyViewVisibilityChangedAtReceiver(View* target);
   // Notifies this view and its child hierarchy. Returns false if |this| was
   // deleted during the call (by an observer), otherwise true.
@@ skipping 29 matching lines @@
   };
 
   std::map<const void*, Value> prop_map_;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_PUBLIC_CPP_VIEW_H_