Update from https://crrev.com/305340

cc/surfaces/surface_aggregator.h

Index: cc/surfaces/surface_aggregator.h
diff --git a/cc/surfaces/surface_aggregator.h b/cc/surfaces/surface_aggregator.h
index aeeb59013998b4606ab1f4e1c58180272a7fa742..696504199f6b7844883cdc7ad7bfab1ccd9697c5 100644
--- a/cc/surfaces/surface_aggregator.h
+++ b/cc/surfaces/surface_aggregator.h
@@ -41,6 +41,7 @@ class CC_SURFACES_EXPORT SurfaceAggregator {
                            SurfaceId surface_id);
 
   void HandleSurfaceQuad(const SurfaceDrawQuad* surface_quad,
+                         float opacity,
                          RenderPass* dest_pass);
   void CopySharedQuadState(const SharedQuadState* source_sqs,
                            const gfx::Transform& content_to_target_transform,
@@ -48,6 +49,7 @@ class CC_SURFACES_EXPORT SurfaceAggregator {
   void CopyQuadsToPass(const QuadList& source_quad_list,
                        const SharedQuadStateList& source_shared_quad_state_list,
                        const gfx::Transform& content_to_target_transform,
+                       float opacity,
                        RenderPass* dest_pass,
                        SurfaceId surface_id);
   void CopyPasses(const DelegatedFrameData* frame_data, Surface* surface);