Pass Surface ID namespace to renderer compositors.

content/browser/renderer_host/render_widget_host_view_aura_unittest.cc

Index: content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
index aba2b57322ef07d0fe0960cff38befe6ac9c07b5..7c077f954e9cb888076d4d8b702f59cc1481c6f8 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
@@ -3369,4 +3369,22 @@ TEST_F(RenderWidgetHostViewAuraOverscrollTest, ScrollDeltasResetOnEnd) {
   EXPECT_EQ(0.f, overscroll_delta_y());
 }
 
+// Tests the RenderWidgetHostImpl sends the correct surface ID namespace to
+// the renderer process.
+TEST_F(RenderWidgetHostViewAuraTest, SurfaceIdNamespaceInitialized) {
+  gfx::Size size(5, 5);
+
+  const IPC::Message* msg =
+      sink_->GetUniqueMessageMatching(ViewMsg_SetSurfaceIdNamespace::ID);
+  EXPECT_TRUE(msg);
+  ViewMsg_SetSurfaceIdNamespace::Param params;
+  ViewMsg_SetSurfaceIdNamespace::Read(msg, &params);
+  view_->InitAsChild(NULL);
+  view_->Show();
+  view_->SetSize(size);
+  view_->OnSwapCompositorFrame(0,
+                               MakeDelegatedFrame(1.f, size, gfx::Rect(size)));
+  EXPECT_EQ(view_->GetSurfaceIdNamespace(), get<0>(params));
+}
+
 }  // namespace content