gesture recognizer: Remove the touch-event queue.

content/browser/renderer_host/touch_event_queue.h

Index: content/browser/renderer_host/touch_event_queue.h
diff --git a/content/browser/renderer_host/touch_event_queue.h b/content/browser/renderer_host/touch_event_queue.h
index 2301fbd0f12441fc6d669381f4555df7e5442f1d..a77d812125d3501f59f0ca29420938a1e7b8ad46 100644
--- a/content/browser/renderer_host/touch_event_queue.h
+++ b/content/browser/renderer_host/touch_event_queue.h
@@ -10,6 +10,8 @@
 #include "base/basictypes.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
+class MockRenderWidgetHost;
+
 namespace content {
 
 class RenderWidgetHostImpl;
@@ -31,7 +33,28 @@ class TouchEventQueue {
   // additional queued touch-events to the renderer.
   void ProcessTouchAck(bool processed);
 
+  // Empties the queue of touch events. This may result in any number of gesture
+  // events being sent to the renderer.
+  void FlushQueue();
+
+  // Resets all internal state. This does not trigger any touch or gesture
+  // events to be sent.
+  void Reset();
+
+  // Returns whether the event-queue is empty.
+  bool empty() const WARN_UNUSED_RESULT {
+    return touch_queue_.empty();
+  }
+
  private:
+  friend class ::MockRenderWidgetHost;
+
+  // Pops the touch-event from the top of the queue and sends it to the
+  // RenderWidgetHostView. This reduces the size of the queue by one.
+  void PopTouchEventToView(bool processed);
+
+  bool CoalesceIfPossible(const WebKit::WebTouchEvent& event);
+
   // The RenderWidgetHost that owns this event-queue.
   RenderWidgetHostImpl* render_widget_host_;