Revert of Revert of Early terminate flings when scrolling impossible (https://codereview.chromium.org/213743004/)

Reason for revert:
The broken fling layout test has been fixed in: https://codereview.chromium.org/219243010/

Original issue's description:
> Revert of Early terminate flings when scrolling impossible (https://codereview.chromium.org/136173004/)
> 
> Reason for revert:
> Broke a layout test, fast/events/touch/gesture/pad-gesture-fling.html
> 
> http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20Blink&tests=fast%2Fevents%2Ftouch%2Fgesture%2Fpad-gesture-fling.html
> 
> 
> Original issue's description:
> > Early terminate flings when scrolling impossible
> > 
> > Previously, flings were terminated early only if the root layer overscrolled.
> > Now, flings will terminate if the fling target's |scrollBy()| method returns
> > false, providing consistency between layer types and saving battery on
> > sites with scrolling sublayers.
> > 
> > Also move |DidOverscrollParams| into content/ in anticipation of using it
> > directly in the overscroll IPC message.
> > 
> > Corresponding Blink patch:
> > https://codereview.chromium.org/139493003/
> > 
> > Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260631
> 
> TBR=aelias@chromium.org,jochen@chromium.org,jdduke@chromium.org
> NOTREECHECKS=true
> NOTRY=true
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260773

TBR=aelias@chromium.org,jochen@chromium.org,tkent@chromium.org

NOTRY=true

Review URL: https://codereview.chromium.org/222353002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261187 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 2 insertions, 9 deletions

diff --git a/cc/input/input_handler.h b/cc/input/input_handler.h
index fda17cd..b269345 100644
--- a/cc/input/input_handler.h
+++ b/cc/input/input_handler.h
@@ -24,12 +24,6 @@ namespace cc {
 
 class LayerScrollOffsetDelegate;
 
-struct DidOverscrollParams {
-  gfx::Vector2dF accumulated_overscroll;
-  gfx::Vector2dF latest_overscroll_delta;
-  gfx::Vector2dF current_fling_velocity;
-};
-
 class CC_EXPORT InputHandlerClient {
  public:
   virtual ~InputHandlerClient() {}
@@ -41,7 +35,8 @@ class CC_EXPORT InputHandlerClient {
   // Called when scroll deltas reaching the root scrolling layer go unused.
   // The accumulated overscroll is scoped by the most recent call to
   // InputHandler::ScrollBegin.
-  virtual void DidOverscroll(const DidOverscrollParams& params) = 0;
+  virtual void DidOverscroll(const gfx::Vector2dF& accumulated_overscroll,
+                             const gfx::Vector2dF& latest_overscroll_delta) = 0;
 
  protected:
   InputHandlerClient() {}
@@ -94,8 +89,6 @@ class CC_EXPORT InputHandler {
   // ScrollIgnored if not.
   virtual ScrollStatus FlingScrollBegin() = 0;
 
-  virtual void NotifyCurrentFlingVelocity(const gfx::Vector2dF& velocity) = 0;
-
   virtual void MouseMoveAt(const gfx::Point& mouse_position) = 0;
 
   // Stop scrolling the selected layer. Should only be called if ScrollBegin()