Remove browser-side tracking of accelerated compositing

content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc

Index: content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
diff --git a/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc b/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
index a9419b30e6fd02b1797cf8748d1c3c7406002890..05c2c7b845533a2dd0dac69272cd55a2c6cfdf5e 100644
--- a/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
+++ b/content/browser/web_contents/aura/overscroll_navigation_overlay_unittest.cc
@@ -73,11 +73,6 @@ class OverscrollNavigationOverlayTest : public RenderViewHostImplTestHarness {
     contents()->NavigateAndCommit(second);
     EXPECT_TRUE(controller().CanGoBack());
 
-    // Turn on compositing.
-    ViewHostMsg_DidActivateAcceleratedCompositing msg(
-        test_rvh()->GetRoutingID(), true);
-    RenderViewHostTester::TestOnMessageReceived(test_rvh(), msg);
-
     // Receive a paint update. This is necessary to make sure the size is set
     // correctly in RenderWidgetHostImpl.
     ViewHostMsg_UpdateRect_Params params;