Plumb smooth scrolling in Chromium compositor

content/browser/android/in_process/synchronous_compositor_impl.cc

Index: content/browser/android/in_process/synchronous_compositor_impl.cc
diff --git a/content/browser/android/in_process/synchronous_compositor_impl.cc b/content/browser/android/in_process/synchronous_compositor_impl.cc
index 527f743f709c894cf38e4e5031227244ab899769..c2c17c88353f9479daf89e4c9defed84aaaca6a9 100644
--- a/content/browser/android/in_process/synchronous_compositor_impl.cc
+++ b/content/browser/android/in_process/synchronous_compositor_impl.cc
@@ -353,14 +353,6 @@ gfx::ScrollOffset SynchronousCompositorImpl::GetTotalScrollOffset() {
       compositor_client_->GetTotalRootLayerScrollOffset());
 }
 
-bool SynchronousCompositorImpl::IsExternalScrollActive() const {
-  DCHECK(CalledOnValidThread());
-  DCHECK(compositor_client_);
-  if (!registered_with_client_)
-    return false;
-  return compositor_client_->IsExternalScrollActive();
-}
-
 void SynchronousCompositorImpl::SetNeedsAnimate(
     const AnimationCallback& animation) {
   DCHECK(CalledOnValidThread());