input: Make the OverscrollController less intrusive, and some code cleanup.

content/browser/renderer_host/input/buffered_input_router.cc

Index: content/browser/renderer_host/input/buffered_input_router.cc
diff --git a/content/browser/renderer_host/input/buffered_input_router.cc b/content/browser/renderer_host/input/buffered_input_router.cc
index 3f0fb23d26350793e68fcf9c41c5749024659fc7..fdfa4685b4f559f68d6aabdde08441ee343a92f2 100644
--- a/content/browser/renderer_host/input/buffered_input_router.cc
+++ b/content/browser/renderer_host/input/buffered_input_router.cc
@@ -207,10 +207,6 @@ bool BufferedInputRouter::ShouldForwardGestureEvent(
   return true;
 }
 
-bool BufferedInputRouter::HasQueuedGestureEvents() const {
-  return queued_gesture_count_ > 0;
-}
-
 void BufferedInputRouter::OnWebInputEventAck(
     int64 event_id,
     const WebKit::WebInputEvent& web_event,