Plumb ViewportMetrics change notifications around the world and back.

services/view_manager/server_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 SERVICES_VIEW_MANAGER_SERVER_VIEW_H_
 #define SERVICES_VIEW_MANAGER_SERVER_VIEW_H_
 
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 22 matching lines @@
 
   void Add(ServerView* child);
   void Remove(ServerView* child);
   void Reorder(ServerView* child,
                ServerView* relative,
                mojo::OrderDirection direction);
 
   const gfx::Rect& bounds() const { return bounds_; }
   void SetBounds(const gfx::Rect& bounds);
 
+  const mojo::ViewportMetrics& viewport_metrics() { return *viewport_metrics_; }

[sky, 2015/01/27 23:40:23]

Since we currently only support metrics on the root you shouldn't need to add
anything on ServerView. At some point we may want to support metrics on certain
nodes, but lets wait until we actually need that.

+  void SetViewportMetrics(const mojo::ViewportMetrics& metrics);
+
   const ServerView* parent() const { return parent_; }
   ServerView* parent() { return parent_; }
 
   const ServerView* GetRoot() const;
   ServerView* GetRoot() {
     return const_cast<ServerView*>(
         const_cast<const ServerView*>(this)->GetRoot());
   }
 
   std::vector<const ServerView*> GetChildren() const;
@@ skipping 35 matching lines @@
 
   // Implementation of removing a view. Doesn't send any notification.
   void RemoveImpl(ServerView* view);
 
   ServerViewDelegate* delegate_;
   const ViewId id_;
   ServerView* parent_;
   Views children_;
   bool visible_;
   gfx::Rect bounds_;
+  mojo::ViewportMetricsPtr viewport_metrics_;
   cc::SurfaceId surface_id_;
   float opacity_;
   gfx::Transform transform_;
 
   std::map<std::string, std::vector<uint8_t>> properties_;
 
   DISALLOW_COPY_AND_ASSIGN(ServerView);
 };
 
 }  // namespace view_manager
 
 #endif  // SERVICES_VIEW_MANAGER_SERVER_VIEW_H_