Send size to NativeViewportClient::OnCreated instead of GLES2Client::DidCreateContext

mojo/services/native_viewport/native_viewport_service.cc

Index: mojo/services/native_viewport/native_viewport_service.cc
diff --git a/mojo/services/native_viewport/native_viewport_service.cc b/mojo/services/native_viewport/native_viewport_service.cc
index 3d42382c4e5c7df617d096c2fd800dbbecf9df4c..1067e748d195bbd676934e638881bc9aaeeba8ed 100644
--- a/mojo/services/native_viewport/native_viewport_service.cc
+++ b/mojo/services/native_viewport/native_viewport_service.cc
@@ -79,7 +79,7 @@ class NativeViewportService::NativeViewportImpl
     if (widget_ == gfx::kNullAcceleratedWidget || !gles2_)
       return;
     gfx::Size size = native_viewport_->GetSize();
-    if (size.width() == 0 || size.height() == 0)
+    if (size.IsEmpty())
       return;
     gles2_->CreateContext(widget_, size);
     created_context_ = true;
@@ -146,6 +146,7 @@ class NativeViewportService::NativeViewportImpl
 
   virtual void OnBoundsChanged(const gfx::Rect& bounds) MOJO_OVERRIDE {
     CreateGLES2ContextIfNeeded();
+    AllocationScope allocation;
     client_->OnBoundsChanged(bounds);
   }