NOT FOR LANDING - [WebView] Allow fling animation via the LayerScrollOffsetDelegate

cc/trees/layer_tree_impl.cc

Index: cc/trees/layer_tree_impl.cc
diff --git a/cc/trees/layer_tree_impl.cc b/cc/trees/layer_tree_impl.cc
index a4d5cab9f94bf866f23e8d35e6fcfa9b107eb0ee..9b916809f5d58a6e4441707b0675db1db7c1f55d 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -72,6 +72,10 @@ class LayerScrollOffsetDelegateProxy : public LayerScrollOffsetDelegate {
     NOTIMPLEMENTED();
   }
 
+  virtual void SetNeedsAnimate(const AnimationCallback& animation) OVERRIDE {
+    NOTIMPLEMENTED();
+  }
+
  private:
   LayerImpl* layer_;
   LayerScrollOffsetDelegate* delegate_;