Plumb gesture source value through Blink.

third_party/WebKit/Source/web/tests/WebInputEventConversionTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 415 matching lines @@
 
     {
         PlatformMouseEvent platformMouseEvent(IntPoint(10, 10), IntPoint(10, 10), NoButton, PlatformEvent::MouseMoved, 1, PlatformEvent::NoModifiers, PlatformMouseEvent::RealOrIndistinguishable, 0);
         RefPtrWillBeRawPtr<MouseEvent> mouseEvent = MouseEvent::create(EventTypeNames::mousemove, domWindow, platformMouseEvent, 0, document);
         WebMouseEventBuilder webMouseBuilder(view, documentLayoutView, *mouseEvent);
         EXPECT_EQ(WebMouseEvent::ButtonNone, webMouseBuilder.button);
     }
 
     {
         PlatformGestureEvent platformGestureEvent(PlatformEvent::GestureScrollUpdate, IntPoint(10, 12), IntPoint(20, 22), IntSize(25, 27), 0,
-            PlatformEvent::NoModifiers);
+            PlatformEvent::NoModifiers, PlatformGestureSourceTouchscreen);
         platformGestureEvent.setScrollGestureData(30, 32, 40, 42, true, true, -1 /* null plugin id */);
         // FIXME: GestureEvent does not preserve velocityX, velocityY,
         // or preventPropagation. It also fails to scale
         // coordinates (x, y, deltaX, deltaY) to the page scale. This
         // may lead to unexpected bugs if a PlatformGestureEvent is
         // transformed into WebGestureEvent and back.
         RefPtrWillBeRawPtr<GestureEvent> gestureEvent = GestureEvent::create(domWindow, platformGestureEvent);
         WebGestureEventBuilder webGestureBuilder(documentLayoutView, *gestureEvent);
 
         EXPECT_EQ(10, webGestureBuilder.x);
         EXPECT_EQ(12, webGestureBuilder.y);
         EXPECT_EQ(20, webGestureBuilder.globalX);
         EXPECT_EQ(22, webGestureBuilder.globalY);
         EXPECT_EQ(30, webGestureBuilder.data.scrollUpdate.deltaX);
         EXPECT_EQ(32, webGestureBuilder.data.scrollUpdate.deltaY);
         EXPECT_EQ(0, webGestureBuilder.data.scrollUpdate.velocityX);
         EXPECT_EQ(0, webGestureBuilder.data.scrollUpdate.velocityY);
         EXPECT_TRUE(webGestureBuilder.data.scrollUpdate.inertial);
         EXPECT_FALSE(webGestureBuilder.data.scrollUpdate.preventPropagation);
+        EXPECT_EQ(WebGestureDeviceTouchscreen,  webGestureBuilder.sourceDevice);
     }
 
     {
         RefPtrWillBeRawPtr<Touch> touch = Touch::create(toLocalFrame(webViewImpl->page()->mainFrame()), document.get(), 0, FloatPoint(10, 9.5), FloatPoint(3.5, 2), FloatSize(4, 4.5), 0, 0);
         RefPtrWillBeRawPtr<TouchList> touchList = TouchList::create();
         touchList->append(touch);
         RefPtrWillBeRawPtr<TouchEvent> touchEvent = TouchEvent::create(touchList.get(), touchList.get(), touchList.get(), EventTypeNames::touchmove, domWindow, PlatformEvent::NoModifiers, false, false);
 
         WebTouchEventBuilder webTouchBuilder(documentLayoutView, *touchEvent);
         ASSERT_EQ(1u, webTouchBuilder.touchesLength);
@@ skipping 503 matching lines @@
         EXPECT_EQ(15, platformWheelBuilder.deltaX());
         EXPECT_EQ(10, platformWheelBuilder.deltaY());
         EXPECT_EQ(PlatformEvent::AltKey, platformWheelBuilder.modifiers());
         EXPECT_TRUE(platformWheelBuilder.hasPreciseScrollingDeltas());
         EXPECT_FALSE(platformWheelBuilder.canScroll());
         EXPECT_EQ(platformWheelBuilder.railsMode(), PlatformEvent::RailsModeVertical);
     }
 }
 
 } // namespace blink