DirectRenderer allows empty swap rects for CommitOverlayPlanes

content/browser/renderer_host/compositor_impl_android.cc

Index: content/browser/renderer_host/compositor_impl_android.cc
diff --git a/content/browser/renderer_host/compositor_impl_android.cc b/content/browser/renderer_host/compositor_impl_android.cc
index 90d3241cd838b483274e61161a3bb237b8b33e18..8bf84020310cb0dd99817318acddc2319a1bc967 100644
--- a/content/browser/renderer_host/compositor_impl_android.cc
+++ b/content/browser/renderer_host/compositor_impl_android.cc
@@ -97,9 +97,13 @@ class OutputSurfaceWithoutParent : public cc::OutputSurface,
 
   void SwapBuffers(cc::CompositorFrame* frame) override {
     GetCommandBufferProxy()->SetLatencyInfo(frame->metadata.latency_info);
-    DCHECK(frame->gl_frame_data->sub_buffer_rect ==
-           gfx::Rect(frame->gl_frame_data->size));
-    context_provider_->ContextSupport()->Swap();
+    if (frame->gl_frame_data->sub_buffer_rect.IsEmpty()) {
+      context_provider_->ContextSupport()->CommitOverlayPlanes();
+    } else {
+      DCHECK(frame->gl_frame_data->sub_buffer_rect ==
+             gfx::Rect(frame->gl_frame_data->size));
+      context_provider_->ContextSupport()->Swap();
+    }
     client_->DidSwapBuffers();
   }