Merge from Chromium at DEPS revision 269467

This commit was generated by merge_to_master.py.

Change-Id: Id6c03d44b5ad8b098017a943eb9ec8d804dfed99
diff --git a/mojo/aura/window_tree_host_mojo.cc b/mojo/aura/window_tree_host_mojo.cc
index b623bbd..9aba1d8 100644
--- a/mojo/aura/window_tree_host_mojo.cc
+++ b/mojo/aura/window_tree_host_mojo.cc
@@ -26,12 +26,14 @@
 // WindowTreeHostMojo, public:
 
 WindowTreeHostMojo::WindowTreeHostMojo(
-    ScopedNativeViewportHandle viewport_handle,
+    NativeViewportPtr viewport,
     const gfx::Rect& bounds,
     const base::Callback<void()>& compositor_created_callback)
-    : native_viewport_(viewport_handle.Pass(), this),
+    : native_viewport_(viewport.Pass()),
       compositor_created_callback_(compositor_created_callback),
       bounds_(bounds) {
+  native_viewport_->SetClient(this);
+
   AllocationScope scope;
   native_viewport_->Create(bounds);