Make sure send one WebTouchEvent ack per ui::TouchEvent

content/browser/renderer_host/render_widget_host_view_aura.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 491 matching lines @@
   bool CanRendererHandleEvent(const ui::MouseEvent* event,
                               bool mouse_locked,
                               bool selection_popup);
 
   // Called when the parent window bounds change.
   void HandleParentBoundsChanged();
 
   // Called when the parent window hierarchy for our window changes.
   void ParentHierarchyChanged();
 
+  // Reset unchange touch point to StateStationary for touchmove and
+  // touchcancel.
+  void SetTouchPointStateStationary(blink::WebTouchEvent* event, int touch_id);
+
   // The model object.
   RenderWidgetHostImpl* host_;
 
   aura::Window* window_;
 
   scoped_ptr<DelegatedFrameHost> delegated_frame_host_;
 
   scoped_ptr<WindowObserver> window_observer_;
 
   // Tracks the ancestors of the RWHVA window for window location changes.
@@ skipping 148 matching lines @@
   // compositing surface and showing the disambiguation popup.
   gfx::Vector2dF disambiguation_scroll_offset_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAura> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_AURA_H_