Rename kAnimatingScrollOnMainThread to kHandlingScrollFromMainThread

ui/events/blink/input_handler_proxy.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/blink/input_handler_proxy.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 409 matching lines @@
           cc::MainThreadScrollingReason::kNotScrollingOnMain,
           cc::MainThreadScrollingReason::kMainThreadScrollingReasonCount);
     }
   }
 
   for (uint32_t i = 0;
        i < cc::MainThreadScrollingReason::kMainThreadScrollingReasonCount - 1;
        ++i) {
     unsigned val = 1 << i;
     if (reasons & val) {
-      if (val == cc::MainThreadScrollingReason::kAnimatingScrollOnMainThread) {
-        // We only want to record "animating scroll on main thread" reason if
+      if (val == cc::MainThreadScrollingReason::kHandlingScrollFromMainThread) {
+        // We only want to record "Handling scroll from main thread" reason if
         // it's the only reason. If it's not the only reason, the "real" reason
         // for scrolling on main is something else, and we only want to pay
         // attention to that reason.
         if (reasons & ~val)
           continue;
       }
       if (device == blink::WebGestureDeviceTouchscreen) {
         UMA_HISTOGRAM_ENUMERATION(
             kGestureHistogramName, i + 1,
             cc::MainThreadScrollingReason::kMainThreadScrollingReasonCount);
@@ skipping 895 matching lines @@
   // is made asynchronously, to minimize divergence between main thread and
   // impl thread event handling paths.
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE,
       base::Bind(&InputScrollElasticityController::ObserveGestureEventAndResult,
                  scroll_elasticity_controller_->GetWeakPtr(), gesture_event,
                  scroll_result));
 }
 
 }  // namespace ui