Plumb ViewportMetrics change notifications around the world and back.

services/view_manager/connection_manager.cc

Index: services/view_manager/connection_manager.cc
diff --git a/services/view_manager/connection_manager.cc b/services/view_manager/connection_manager.cc
index f5e408d794bb85d6b7d736d0174143b3596c7f85..52522bec9546dae3e1fde6c38b458c30fa8da8a7 100644
--- a/services/view_manager/connection_manager.cc
+++ b/services/view_manager/connection_manager.cc
@@ -245,6 +245,16 @@ void ConnectionManager::ProcessViewBoundsChanged(const ServerView* view,
   }
 }
 
+void ConnectionManager::ProcessViewportMetricsChanged(
+    const ServerView* view,
+    const mojo::ViewportMetrics& old_metrics,
+    const mojo::ViewportMetrics& new_metrics) {
+  for (auto& pair : connection_map_) {
+    pair.second->service()->ProcessViewportMetricsChanged(
+        view, old_metrics, new_metrics, IsChangeSource(pair.first));
+  }
+}
+
 void ConnectionManager::ProcessWillChangeViewHierarchy(
     const ServerView* view,
     const ServerView* new_parent,
@@ -376,6 +386,17 @@ void ConnectionManager::OnViewBoundsChanged(const ServerView* view,
   display_manager_->SchedulePaint(view->parent(), new_bounds);
 }
 
+void ConnectionManager::OnViewViewportMetricsChanged(
+    const ServerView* view,
+    const mojo::ViewportMetrics& old_metrics,
+    const mojo::ViewportMetrics& new_metrics) {
+  if (in_destructor_)
+    return;
+
+  ProcessViewportMetricsChanged(view, old_metrics, new_metrics);
+  // TODO(sky): Do we need to repaint here?

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

I would think not.

+}
+
 void ConnectionManager::OnViewSurfaceIdChanged(const ServerView* view) {
   if (!in_destructor_)
     display_manager_->SchedulePaint(view, gfx::Rect(view->bounds().size()));