Remove dependency on ui from view_manager.

mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc

Index: mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc
diff --git a/mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc b/mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc
index 8004d2978ab02dd386087f4fab87b1f5204c386e..b7397b1154fe062958165a38087236840d286a08 100644
--- a/mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc
+++ b/mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.cc
@@ -37,7 +37,7 @@ View* AddViewToViewManager(ViewManagerClientImpl* client,
   private_view.set_visible(view_data->visible);
   private_view.set_drawn(view_data->drawn);
   client->AddView(view);
-  private_view.LocalSetBounds(gfx::Rect(), view_data->bounds.To<gfx::Rect>());
+  private_view.LocalSetBounds(Rect(), *view_data->bounds);
   if (parent)
     ViewPrivate(parent).LocalAddChild(view);
   return view;
@@ -154,10 +154,9 @@ bool ViewManagerClientImpl::OwnsView(Id id) const {
   return HiWord(id) == connection_id_;
 }
 
-void ViewManagerClientImpl::SetBounds(Id view_id, const gfx::Rect& bounds) {
+void ViewManagerClientImpl::SetBounds(Id view_id, const Rect& bounds) {
   DCHECK(connected_);
-  service_->SetViewBounds(view_id, Rect::From(bounds),
-                          ActionCompletedCallback());
+  service_->SetViewBounds(view_id, bounds.Clone(), ActionCompletedCallback());
 }
 
 void ViewManagerClientImpl::SetSurfaceId(Id view_id, SurfaceIdPtr surface_id) {
@@ -265,8 +264,7 @@ void ViewManagerClientImpl::OnViewBoundsChanged(Id view_id,
                                                 RectPtr old_bounds,
                                                 RectPtr new_bounds) {
   View* view = GetViewById(view_id);
-  ViewPrivate(view).LocalSetBounds(old_bounds.To<gfx::Rect>(),
-                                   new_bounds.To<gfx::Rect>());
+  ViewPrivate(view).LocalSetBounds(*old_bounds, *new_bounds);
 }
 
 void ViewManagerClientImpl::OnViewHierarchyChanged(