Revert of Add suppresion of slop region touches in browser

content/browser/renderer_host/input/passthrough_touch_event_queue.h

Index: content/browser/renderer_host/input/passthrough_touch_event_queue.h
diff --git a/content/browser/renderer_host/input/passthrough_touch_event_queue.h b/content/browser/renderer_host/input/passthrough_touch_event_queue.h
index 561d0c204c5903672f811b06112d0c246a2a8e02..598e9b86632fd56fb5fe4f2764df083a0f86e5de 100644
--- a/content/browser/renderer_host/input/passthrough_touch_event_queue.h
+++ b/content/browser/renderer_host/input/passthrough_touch_event_queue.h
@@ -12,7 +12,6 @@
 namespace content {
 
 class TouchTimeoutHandler;
-class TouchMoveSlopSuppressor;
 
 // A queue that processes a touch-event and forwards it on to the
 // renderer process immediately. This class assumes that queueing will
@@ -116,10 +115,6 @@
   // cancelled after a touch timeout.
   bool drop_remaining_touches_in_sequence_;
 
-  // Suppresses TouchMove's within a slop region when a sequence has not yet
-  // been preventDefaulted.
-  std::unique_ptr<TouchMoveSlopSuppressor> touchmove_slop_suppressor_;
-
   // Optional handler for timed-out touch event acks.
   std::unique_ptr<TouchTimeoutHandler> timeout_handler_;