use enum to specify deviceSource for fling animation.

content/browser/renderer_host/ui_events_helper.cc

 // Copyright (c) 2012 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/browser/renderer_host/ui_events_helper.h"
 
 #include "content/common/input/web_touch_event_traits.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
@@ skipping 215 matching lines @@
       break;
     case ui::ET_GESTURE_BEGIN:
     case ui::ET_GESTURE_END:
     case ui::ET_GESTURE_MULTIFINGER_SWIPE:
       gesture_event.type = blink::WebInputEvent::Undefined;
       break;
     default:
       NOTREACHED() << "Unknown gesture type: " << event.type();
   }
 
-  gesture_event.sourceDevice = blink::WebGestureEvent::Touchscreen;
+  gesture_event.sourceDevice = blink::WebGestureDeviceTouchpad;
   gesture_event.modifiers = EventFlagsToWebEventModifiers(event.flags());
   gesture_event.timeStampSeconds = event.time_stamp().InSecondsF();
 
   return gesture_event;
 }
 
 int EventFlagsToWebEventModifiers(int flags) {
   int modifiers = 0;
 
   if (flags & ui::EF_SHIFT_DOWN)
@@ skipping 81 matching lines @@
   // Update the type of the touch event.
   WebTouchEventTraits::ResetType(TouchEventTypeFromEvent(event),
                                  event.time_stamp().InSecondsF(),
                                  web_event);
   web_event->modifiers = EventFlagsToWebEventModifiers(event.flags());
 
   return point;
 }
 
 }  // namespace content