Revert of Touchpad and wheel scroll latching for ChromeOS behind flag.

content/browser/renderer_host/input/mouse_wheel_event_queue.cc

Index: content/browser/renderer_host/input/mouse_wheel_event_queue.cc
diff --git a/content/browser/renderer_host/input/mouse_wheel_event_queue.cc b/content/browser/renderer_host/input/mouse_wheel_event_queue.cc
index 0d92d81583175a3b6dd5283d9166ad93c27ad320..113fb42dfd9320b48cc975863a8423fe7ec313cf 100644
--- a/content/browser/renderer_host/input/mouse_wheel_event_queue.cc
+++ b/content/browser/renderer_host/input/mouse_wheel_event_queue.cc
@@ -278,17 +278,8 @@
               gesture_event.event.type ==
                   blink::WebInputEvent::GestureFlingStart)) {
     scrolling_device_ = blink::WebGestureDeviceUninitialized;
-    if (scroll_end_timer_.IsRunning()) {
-      if (enable_scroll_latching_) {
-        // Don't send the pending ScrollEnd if a fling is happening.
-        // The next wheel event will still need a ScrollBegin.
-        scroll_end_timer_.Stop();
-        needs_scroll_begin_ = true;
-        needs_scroll_end_ = false;
-      } else {
-        scroll_end_timer_.Reset();
-      }
-    }
+    if (scroll_end_timer_.IsRunning())
+      scroll_end_timer_.Reset();
   }
 }