First programmatic smooth scroll should run on the compositor if it can

third_party/WebKit/Source/core/frame/FrameView.cpp

Index: third_party/WebKit/Source/core/frame/FrameView.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameView.cpp b/third_party/WebKit/Source/core/frame/FrameView.cpp
index ef885999641b7b495cfeecfa715fe3f8412150dd..964b6a0cdf1661894e945a0c60b33ae35dca389b 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameView.cpp
@@ -434,6 +434,12 @@ ScrollingCoordinator* FrameView::scrollingCoordinator() const
     return p ? p->scrollingCoordinator() : 0;
 }
 
+CompositorAnimationTimeline* FrameView::compositorAnimationTimeline() const
+{
+    ScrollingCoordinator* c = scrollingCoordinator();
+    return c ? c->compositorAnimationTimeline() : 0;

[jbroman, 2016/03/14 17:35:32]

Prefer nullptr to 0.

[ymalik, 2016/03/14 21:45:39]

Done.

+}
+
 void FrameView::setCanHaveScrollbars(bool canHaveScrollbars)
 {
     m_canHaveScrollbars = canHaveScrollbars;