Add use counter when touch-action isn't used when preventDefault'd.

third_party/WebKit/Source/core/input/TouchEventManager.h

Index: third_party/WebKit/Source/core/input/TouchEventManager.h
diff --git a/third_party/WebKit/Source/core/input/TouchEventManager.h b/third_party/WebKit/Source/core/input/TouchEventManager.h
index e6c7d5e811dc1bed8ebf91944a8abaf4c87cac33..750449032fbacebdbbd2573f7253a4073a26001e 100644
--- a/third_party/WebKit/Source/core/input/TouchEventManager.h
+++ b/third_party/WebKit/Source/core/input/TouchEventManager.h
@@ -96,6 +96,10 @@ class CORE_EXPORT TouchEventManager
   bool m_touchPressed;
   // The touch event currently being handled or NoType if none.
   PlatformEvent::EventType m_currentEvent;
+
+  // The current touch action, computed on each touch start and is
+  // a union of all touches. Reset when all touches are released.
+  TouchAction m_currentTouchAction;
 };
 
 }  // namespace blink