Always reset touch action at the beginning of a new gesture sequence

content/common/input/web_input_event_traits.h

Index: content/common/input/web_input_event_traits.h
diff --git a/content/common/input/web_input_event_traits.h b/content/common/input/web_input_event_traits.h
index 9751fc088cbfe34fcb0d9b0e4a663542fdd20980..3528fd3666df40177f8e6099670c486a6d45ca7f 100644
--- a/content/common/input/web_input_event_traits.h
+++ b/content/common/input/web_input_event_traits.h
@@ -23,6 +23,7 @@ class CONTENT_EXPORT WebInputEventTraits {
   static void Coalesce(const blink::WebInputEvent& event_to_coalesce,
                        blink::WebInputEvent* event);
   static bool IgnoresAckDisposition(blink::WebInputEvent::Type type);
+  static bool IsNewTouchSequence(const blink::WebTouchEvent& event);

[jdduke (slow), 2014/02/21 15:45:33]

I wonder if it's worth having a WebTouchEventTraits in
content/renderer_host/input where we can add perhaps a few additional queries
(IsTouchSequenceEnd()? IsValidTouchEvent()?).  We could move it to common should
the need arise to use it elsewhere?

Also, we should be consistent with the GestureEventPacket naming here, e.g.,
TouchSequenceBegin, or NewTouchSequence, but not both... Perhaps a better name
is |TouchSequence{Start,End}| to parallel Touch{Start,End}.

[tdresser, 2014/02/21 19:14:03]

Done.

 };
 
 }  // namespace content