[exo]CompositorFrameSinkHolder calls WillDraw in DidReceiveCompositorFrameAck

components/exo/surface_unittest.cc

Index: components/exo/surface_unittest.cc
diff --git a/components/exo/surface_unittest.cc b/components/exo/surface_unittest.cc
index cd5ddb3863728c04dc62bbdbae86114447249c65..1eb280384a911471422f8c4c89eb083b1161bbbb 100644
--- a/components/exo/surface_unittest.cc
+++ b/components/exo/surface_unittest.cc
@@ -329,8 +329,9 @@ TEST_F(SurfaceTest, SendsBeginFrameAcks) {
   surface->Commit();  // Move callback from pending callbacks to current ones.
   RunAllPendingInMessageLoop();
 
-  // Surface should add itself as observer during WillDraw().
-  surface->WillDraw();
+  // Surface should add itself as observer during
+  // DidReceiveCompositorFrameAck().
+  surface->DidReceiveCompositorFrameAck();
   EXPECT_EQ(1u, source.num_observers());
 
   cc::BeginFrameArgs args(source.CreateBeginFrameArgs(BEGINFRAME_FROM_HERE));