Plumb gesture source value through Blink.

components/test_runner/event_sender.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 "components/test_runner/event_sender.h"
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
@@ skipping 1645 matching lines @@
       break;
     }
   }
   delegate_->PrintMessage(std::string("Filename being dragged: ") +
                           filename.utf8().data() + "\n");
 }
 
 void EventSender::GestureFlingCancel() {
   WebGestureEvent event;
   event.type = WebInputEvent::GestureFlingCancel;
+  // Generally it won't matter what device we use here, and since it might
+  // be cumbersome to expect all callers to specify a device, we'll just
+  // choose Touchpad here.
+  event.sourceDevice = blink::WebGestureDeviceTouchpad;
   event.timeStampSeconds = GetCurrentEventTimeSec();
 
   if (force_layout_on_events_)
     view_->layout();
 
   HandleInputEventOnViewOrPopup(event);
 }
 
 void EventSender::GestureFlingStart(float x,
                                     float y,
@@ skipping 851 matching lines @@
   last_event_timestamp_ = event.timeStampSeconds;
 
   if (WebPagePopup* popup = view_->pagePopup()) {
     if (!WebInputEvent::isKeyboardEventType(event.type))
       return popup->handleInputEvent(event);
   }
   return view_->handleInputEvent(event);
 }
 
 }  // namespace test_runner