Notify Blink about start of gesture scroll through a queued event.

content/common/input/web_input_event_traits.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 "content/common/input/web_input_event_traits.h"
 
 #include <bitset>
 #include <limits>
 
 #include "base/logging.h"
@@ skipping 395 matching lines @@
     CASE_TYPE(GestureTwoFingerTap);
     CASE_TYPE(GestureLongPress);
     CASE_TYPE(GestureLongTap);
     CASE_TYPE(GesturePinchBegin);
     CASE_TYPE(GesturePinchEnd);
     CASE_TYPE(GesturePinchUpdate);
     CASE_TYPE(TouchStart);
     CASE_TYPE(TouchMove);
     CASE_TYPE(TouchEnd);
     CASE_TYPE(TouchCancel);
+    CASE_TYPE(TouchScrollStarted);
     default:
       // Must include default to let blink::WebInputEvent add new event types
       // before they're added here.
       DLOG(WARNING) <<
           "Unhandled WebInputEvent type in WebInputEventTraits::GetName.\n";
       break;
   }
 #undef CASE_TYPE
   return "";
 }
@@ skipping 49 matching lines @@
     case WebInputEvent::ContextMenu:
     case WebInputEvent::GestureScrollBegin:
     case WebInputEvent::GestureScrollEnd:
     case WebInputEvent::GestureShowPress:
     case WebInputEvent::GestureTapUnconfirmed:
     case WebInputEvent::GestureTapDown:
     case WebInputEvent::GestureTapCancel:
     case WebInputEvent::GesturePinchBegin:
     case WebInputEvent::GesturePinchEnd:
     case WebInputEvent::TouchCancel:
+    case WebInputEvent::TouchScrollStarted:
       return false;
     case WebInputEvent::TouchStart:
     case WebInputEvent::TouchEnd:
       return static_cast<const WebTouchEvent&>(event).cancelable;
     default:
       return true;
   }
 }
 
 uint32_t WebInputEventTraits::GetUniqueTouchEventId(
     const WebInputEvent& event) {
   if (WebInputEvent::isTouchEventType(event.type)) {
     return static_cast<const WebTouchEvent&>(event).uniqueTouchEventId;
   }
   return 0U;
 }
 
 }  // namespace content