Touch Events - changedTouches list includes non-changed touch points on Android

content/browser/renderer_host/input/touch_event_queue.h

Index: content/browser/renderer_host/input/touch_event_queue.h
diff --git a/content/browser/renderer_host/input/touch_event_queue.h b/content/browser/renderer_host/input/touch_event_queue.h
index 3c3436af30c98022e80a4299ede90c65bedb99e8..565706e73498e88c6ce2fff54579f877f2d2aa96 100644
--- a/content/browser/renderer_host/input/touch_event_queue.h
+++ b/content/browser/renderer_host/input/touch_event_queue.h
@@ -164,8 +164,13 @@ class CONTENT_EXPORT TouchEventQueue {
   // Safely pop the head of the queue.
   scoped_ptr<CoalescedWebTouchEvent> PopTouchEvent();
 
-  // Dispatch |touch| to the client.
-  void SendTouchEventImmediately(const TouchEventWithLatencyInfo& touch);
+  // Dispatch |touch| to the client. Before dispatching, updates pointer
+  // states in touchmove events for pointers that have not changed position.
+  void SendTouchEventImmediately(TouchEventWithLatencyInfo* touch);
+
+  // Compares all properties of touch points to determine the state.
+  bool HasPointChanged(const blink::WebTouchPoint& last_point,
+      const blink::WebTouchPoint& current_point) const;
 
   enum PreFilterResult {
     ACK_WITH_NO_CONSUMER_EXISTS,
@@ -237,6 +242,9 @@ class CONTENT_EXPORT TouchEventQueue {
   // mode.
   const TouchScrollingMode touch_scrolling_mode_;
 
+  // Event is saved to compare pointer positions for new touchmove events.
+  scoped_ptr<blink::WebTouchEvent> last_sent_touchevent_;
+
   DISALLOW_COPY_AND_ASSIGN(TouchEventQueue);
 };