aura: Add touch-event support for RWHVA.

content/browser/renderer_host/render_widget_host_view_aura.h

 // Copyright (c) 2011 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #pragma once
 
 #include <map>
 
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "ui/aura/window_delegate.h"
 #include "ui/gfx/compositor/compositor_observer.h"
 #include "webkit/glue/webcursor.h"
 
+namespace WebKit {
+class WebTouchEvent;
+}
+
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
 class AcceleratedSurfaceContainerLinux;
 #endif
 
 class RenderWidgetHostViewAura : public RenderWidgetHostView,
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
                                  public ui::CompositorObserver,
 #endif
                                  public aura::WindowDelegate {
  public:
@@ skipping 101 matching lines @@
   RenderWidgetHost* host_;
 
   aura::Window* window_;
 
   // True when content is being loaded. Used to show an hourglass cursor.
   bool is_loading_;
 
   // The cursor for the page. This is passed up from the renderer.
   WebCursor current_cursor_;
 
+  // The touch-event. Its touch-points are updated as necessary. A new
+  // touch-point is added from an ET_TOUCH_PRESSED event, and a touch-point is
+  // removed from the list on an ET_TOUCH_RELEASED event.
+  WebKit::WebTouchEvent touch_event_;
+
 #if defined(UI_COMPOSITOR_IMAGE_TRANSPORT)
   std::vector< base::Callback<void(void)> > on_compositing_ended_callbacks_;
 
   std::map<uint64, scoped_refptr<AcceleratedSurfaceContainerLinux> >
       accelerated_surface_containers_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_