Plumb ViewportMetrics change notifications around the world and back.

services/view_manager/view_manager_service_unittest.cc

 // 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 <string>
 #include <vector>
 
 #include "base/message_loop/message_loop.h"
 #include "mojo/converters/geometry/geometry_type_converters.h"
 #include "mojo/public/interfaces/application/service_provider.mojom.h"
@@ skipping 46 matching lines @@
     tracker_.OnEmbed(connection_id, embedder_url, root.Pass());
   }
   void OnEmbeddedAppDisconnected(uint32_t view) override {
     tracker_.OnEmbeddedAppDisconnected(view);
   }
   void OnViewBoundsChanged(uint32_t view,
                            mojo::RectPtr old_bounds,
                            mojo::RectPtr new_bounds) override {
     tracker_.OnViewBoundsChanged(view, old_bounds.Pass(), new_bounds.Pass());
   }
+  void OnViewViewportMetricsChanged(
+      mojo::ViewportMetricsPtr old_metrics,
+      mojo::ViewportMetricsPtr new_metrics) override {
+    tracker_.OnViewViewportMetricsChanged(old_metrics.Pass(),
+                                          new_metrics.Pass());
+  }
   void OnViewHierarchyChanged(uint32_t view,
                               uint32_t new_parent,
                               uint32_t old_parent,
                               Array<ViewDataPtr> views) override {
     tracker_.OnViewHierarchyChanged(view, new_parent, old_parent, views.Pass());
   }
   void OnViewReordered(uint32_t view_id,
                        uint32_t relative_view_id,
                        mojo::OrderDirection direction) override {
     tracker_.OnViewReordered(view_id, relative_view_id, direction);
@@ skipping 364 matching lines @@
   const ServerView* cloned_view = GetFirstCloned(v1->parent());
   ASSERT_TRUE(cloned_view);
   // |cloned_view| should have a child and its child should have a child.
   ASSERT_EQ(1u, cloned_view->GetChildren().size());
   const ServerView* cloned_view_child = cloned_view->GetChildren()[0];
   EXPECT_EQ(1u, cloned_view_child->GetChildren().size());
   EXPECT_TRUE(cloned_view_child->id() == ClonedViewId());
 }
 
 }  // namespace view_manager