Refactored ScrollbarController function names

There is nothing specific to the mouse in the implementation of
HandleMouseUp/Down functions, so giving it a more generic 'Pointer' name

Bug: 959430
Change-Id: I477ab7cdd65cc374384cae8361cacdde91fb4de0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1783668Reviewed-by: Daniel Libby <dlibby@microsoft.com>
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Sahir Vellani <sahir.vellani@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#693795}

cc/input/scrollbar_controller.cc

@@ -77,7 +77,7 @@ gfx::Vector2dF ScrollbarController::GetThumbRelativePoint(
 
 // Performs hit test and prepares scroll deltas that will be used by GSB and
 // GSU.
-InputHandlerPointerResult ScrollbarController::HandleMouseDown(
+InputHandlerPointerResult ScrollbarController::HandlePointerDown(
     const gfx::PointF position_in_widget) {
   InputHandlerPointerResult scroll_result;
   LayerImpl* layer_impl = GetLayerHitByPoint(position_in_widget);
@@ -381,7 +381,7 @@ void ScrollbarController::StartAutoScrollAnimation(const float velocity,
 }
 
 // Performs hit test and prepares scroll deltas that will be used by GSE.
-InputHandlerPointerResult ScrollbarController::HandleMouseUp(
+InputHandlerPointerResult ScrollbarController::HandlePointerUp(
     const gfx::PointF position_in_widget) {
   InputHandlerPointerResult scroll_result;
   if (scrollbar_scroll_is_active_) {

cc/input/scrollbar_controller.h

@@ -19,11 +19,12 @@ class CC_EXPORT ScrollbarController {
   explicit ScrollbarController(LayerTreeHostImpl*);
   virtual ~ScrollbarController();
 
-  InputHandlerPointerResult HandleMouseDown(
+  InputHandlerPointerResult HandlePointerDown(
       const gfx::PointF position_in_widget);
   InputHandlerPointerResult HandleMouseMove(
       const gfx::PointF position_in_widget);
-  InputHandlerPointerResult HandleMouseUp(const gfx::PointF position_in_widget);
+  InputHandlerPointerResult HandlePointerUp(
+      const gfx::PointF position_in_widget);
 
   // "velocity" here is calculated based on the initial scroll delta (See
   // InitialDeltaToAutoscrollVelocity). This value carries a "sign" which is

cc/trees/layer_tree_host_impl.cc

@@ -4964,7 +4964,7 @@ InputHandlerPointerResult LayerTreeHostImpl::MouseDown(
 
   InputHandlerPointerResult result;
   if (settings().compositor_threaded_scrollbar_scrolling)
-    result = scrollbar_controller_->HandleMouseDown(viewport_point);
+    result = scrollbar_controller_->HandlePointerDown(viewport_point);
 
   return result;
 }
@@ -4984,7 +4984,7 @@ InputHandlerPointerResult LayerTreeHostImpl::MouseUp(
 
   InputHandlerPointerResult result;
   if (settings().compositor_threaded_scrollbar_scrolling)
-    result = scrollbar_controller_->HandleMouseUp(viewport_point);
+    result = scrollbar_controller_->HandlePointerUp(viewport_point);
 
   return result;
 }