Plumb gesture source value through Blink.

content/browser/renderer_host/render_widget_host_impl.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/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 123 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostIteratorImpl);
 };
 
 inline blink::WebGestureEvent CreateScrollBeginForWrapping(
     const blink::WebGestureEvent& gesture_event) {
   DCHECK(gesture_event.type == blink::WebInputEvent::GestureScrollUpdate);
 
   blink::WebGestureEvent wrap_gesture_scroll_begin;
   wrap_gesture_scroll_begin.type = blink::WebInputEvent::GestureScrollBegin;
+  wrap_gesture_scroll_begin.sourceDevice = gesture_event.sourceDevice;
   wrap_gesture_scroll_begin.data.scrollBegin.deltaXHint = 0;
   wrap_gesture_scroll_begin.data.scrollBegin.deltaYHint = 0;
   wrap_gesture_scroll_begin.resendingPluginId = gesture_event.resendingPluginId;
 
   return wrap_gesture_scroll_begin;
 }
 
 inline blink::WebGestureEvent CreateScrollEndForWrapping(
     const blink::WebGestureEvent& gesture_event) {
   DCHECK(gesture_event.type == blink::WebInputEvent::GestureScrollUpdate);
 
   blink::WebGestureEvent wrap_gesture_scroll_end;
   wrap_gesture_scroll_end.type = blink::WebInputEvent::GestureScrollEnd;
+  wrap_gesture_scroll_end.sourceDevice = gesture_event.sourceDevice;
   wrap_gesture_scroll_end.resendingPluginId = gesture_event.resendingPluginId;
 
   return wrap_gesture_scroll_end;
 }
 
 }  // namespace
 
 ///////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostImpl
 
@@ skipping 2017 matching lines @@
 }
 
 #if defined(OS_WIN)
 gfx::NativeViewAccessible
     RenderWidgetHostImpl::GetParentNativeViewAccessible() {
   return delegate_ ? delegate_->GetParentNativeViewAccessible() : NULL;
 }
 #endif
 
 }  // namespace content