aura: Add flag to indicate if a drag session is started with touch or mouse.

ui/views/widget/desktop_native_widget_aura.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 "ui/views/widget/desktop_native_widget_aura.h"
 
 #include "base/bind.h"
 #include "ui/aura/client/stacking_client.h"
 #include "ui/aura/focus_manager.h"
 #include "ui/aura/root_window.h"
@@ skipping 353 matching lines @@
   desktop_root_window_host_->FlashFrame(flash_frame);
 }
 
 bool DesktopNativeWidgetAura::IsAccessibleWidget() const {
   return false;
 }
 
 void DesktopNativeWidgetAura::RunShellDrag(View* view,
                             const ui::OSExchangeData& data,
                             const gfx::Point& location,
-                            int operation) {
+                            int operation,
+                            ui::DragDropTypes::DragEventSource source) {
 }
 
 void DesktopNativeWidgetAura::SchedulePaintInRect(const gfx::Rect& rect) {
   if (window_)
     window_->SchedulePaintInRect(rect);
 }
 
 void DesktopNativeWidgetAura::SetCursor(gfx::NativeCursor cursor) {
   desktop_root_window_host_->AsRootWindowHost()->SetCursor(cursor);
 }
@@ skipping 185 matching lines @@
     GetWidget()->non_client_view()->SchedulePaint();
 }
 
 void DesktopNativeWidgetAura::OnLostActive() {
   native_widget_delegate_->OnNativeWidgetActivationChanged(false);
   if (IsVisible() && GetWidget()->non_client_view())
     GetWidget()->non_client_view()->SchedulePaint();
 }
 
 }  // namespace views