Add hints for potential overlay promotion on android.

cc/output/direct_renderer.cc

Index: cc/output/direct_renderer.cc
diff --git a/cc/output/direct_renderer.cc b/cc/output/direct_renderer.cc
index cc7fd12c67002cf9dd367ff183eebf9d9792a2d6..87f8ca4d625ed6400b0844599722741ad7496b5f 100644
--- a/cc/output/direct_renderer.cc
+++ b/cc/output/direct_renderer.cc
@@ -307,6 +307,10 @@ void DirectRenderer::DrawFrame(RenderPassList* render_passes_in_draw_order,
   render_passes_in_draw_order->clear();
 }
 
+bool DirectRenderer::IsResourcePromotable(ResourceId resource_id) {
+  return overlay_processor_->IsResourcePromotable(resource_id);
+}
+
 gfx::Rect DirectRenderer::ComputeScissorRectForRenderPass(
     const DrawingFrame* frame) {
   if (frame->current_render_pass == frame->root_render_pass)