Remove unused WebLayerTreeViewImplForTesting::composite

content/test/web_layer_tree_view_impl_for_testing.cc

Index: content/test/web_layer_tree_view_impl_for_testing.cc
diff --git a/content/test/web_layer_tree_view_impl_for_testing.cc b/content/test/web_layer_tree_view_impl_for_testing.cc
index ad653dc8f48e4b49a5cab37f7b049cc6aa660ebb..884bea6a5ae44f21f5b0222de51600f4c5c6150b 100644
--- a/content/test/web_layer_tree_view_impl_for_testing.cc
+++ b/content/test/web_layer_tree_view_impl_for_testing.cc
@@ -120,10 +120,6 @@ bool WebLayerTreeViewImplForTesting::commitRequested() const {
   return layer_tree_host_->CommitRequested();
 }
 
-void WebLayerTreeViewImplForTesting::composite() {
-  layer_tree_host_->Composite(gfx::FrameTime::Now());
-}
-
 void WebLayerTreeViewImplForTesting::didStopFlinging() {}
 
 bool WebLayerTreeViewImplForTesting::compositeAndReadback(