currentlyscrollinglayer cleared in scrollAnimatedBegin.

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 2ec8f709dc2add212eb5f63ffc57fd2fa8bf4ee9..fb5b87e498e88d7f821b3cc0639d191829ae973b 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2788,7 +2788,7 @@ InputHandler::ScrollStatus LayerTreeHostImpl::ScrollAnimatedBegin(
   ScrollStateData scroll_state_data;
   scroll_state_data.position_x = viewport_point.x();
   scroll_state_data.position_y = viewport_point.y();
-  scroll_state_data.is_in_inertial_phase = true;
+  scroll_state_data.is_in_inertial_phase = false;

[ericrk, 2016/08/31 18:29:42]

nit: This is already the default value of is_in_inertial_phase, no need to set
it. There are lots of other fields on ScrollStateData which we don't explicitly
set if left at default, so not setting this seems consistent.

Also update the other occurrence in ScrollAnimated

[sahel, 2016/08/31 19:16:46]

Done.

   ScrollState scroll_state(scroll_state_data);
 
   // ScrollAnimated is used for animated wheel scrolls. We find the first layer
@@ -2801,7 +2801,11 @@ InputHandler::ScrollStatus LayerTreeHostImpl::ScrollAnimatedBegin(
     ScrollStateData scroll_state_end_data;
     scroll_state_end_data.is_ending = true;
     ScrollState scroll_state_end(scroll_state_end_data);
+    // TODO(Sahel): Once the touchpad scroll latching for Non-mac devices is
+    // implemented, the current scrolling layer should not get cleared after
+    // each animation (crbug.com/526463).
     ScrollEnd(&scroll_state_end);
+    ClearCurrentlyScrollingLayer();
   }
   return scroll_status;
 }
@@ -2925,7 +2929,7 @@ InputHandler::ScrollStatus LayerTreeHostImpl::ScrollAnimated(
   }
   scroll_state.set_is_ending(true);
   // TODO(Sahel): Once the touchpad scroll latching for Non-mac devices is
-  // impelemented, the current scrolling layer should not get cleared after
+  // implemented, the current scrolling layer should not get cleared after
   // each animation (crbug.com/526463).
   ScrollEnd(&scroll_state);
   ClearCurrentlyScrollingLayer();
@@ -4166,7 +4170,7 @@ void LayerTreeHostImpl::ScrollOffsetAnimationFinished() {
   ScrollStateData scroll_state_data;
   ScrollState scroll_state(scroll_state_data);
   // TODO(Sahel): Once the touchpad scroll latching for Non-mac devices is
-  // impelemented, the current scrolling layer should not get cleared after
+  // implemented, the current scrolling layer should not get cleared after
   // each animation (crbug.com/526463).
   ScrollEnd(&scroll_state);
   ClearCurrentlyScrollingLayer();