Remove canScroll from WebMouseWheelEvent as it is unused now.

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 2f9ca8c5232ef97f4ae4ae342bae63a494cbee74..e2cb5e3bf4cae7ecc4162687318783f3e8e20304 100644
--- a/content/common/input/web_input_event_traits.h
+++ b/content/common/input/web_input_event_traits.h
@@ -29,6 +29,8 @@ class CONTENT_EXPORT WebInputEventTraits {
                        blink::WebInputEvent* event);
   static bool ShouldBlockEventStream(const blink::WebInputEvent& event);
 
+  static bool ShouldCauseScroll(const blink::WebMouseWheelEvent& event);

[tdresser, 2016/06/10 18:06:46]

Perhaps "MayCauseScroll"?

We don't know for sure that something should cause a scroll if this return true,
we just know that it can't cause a scroll if this returns false.

[Charlie Reis, 2016/06/10 18:47:58]

+1.  Or CanCauseScroll, to be consistent with CanCoalesce and the old canScroll.

[dtapuska, 2016/06/10 19:11:17]

Done.

[dtapuska, 2016/06/10 19:11:17]

Acknowledged.

+
   // Return uniqueTouchEventId for WebTouchEvent, otherwise return 0.
   static uint32_t GetUniqueTouchEventId(const blink::WebInputEvent& event);
 };