Remove GestureScrollUpdateWithoutPropagation event

content/common/input/gesture_event_stream_validator.cc

 // Copyright 2014 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 "content/common/input/gesture_event_stream_validator.h"
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "content/common/input/web_input_event_traits.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
@@ skipping 19 matching lines @@
   }
   switch (event.type) {
     case WebInputEvent::GestureScrollBegin:
       if (scrolling_)
         error_msg->append("Scroll begin during scroll\n");
       if (pinching_)
         error_msg->append("Scroll begin during pinch\n");
       scrolling_ = true;
       break;
     case WebInputEvent::GestureScrollUpdate:
-    case WebInputEvent::GestureScrollUpdateWithoutPropagation:
       if (!scrolling_)
         error_msg->append("Scroll update outside of scroll\n");
       break;
     case WebInputEvent::GestureScrollEnd:
     case WebInputEvent::GestureFlingStart:
       if (!scrolling_)
         error_msg->append("Scroll end outside of scroll\n");
       if (pinching_)
         error_msg->append("Ending scroll while pinching\n");
       scrolling_ = false;
@@ skipping 36 matching lines @@
       // preceding TapDown.
       waiting_for_tap_end_ = false;
       break;
     default:
       break;
   }
   return error_msg->empty();
 }
 
 }  // namespace content