Add modifier flags to MotionEvent

ui/events/gesture_detection/motion_event_generic.cc

Index: ui/events/gesture_detection/motion_event_generic.cc
diff --git a/ui/events/gesture_detection/motion_event_generic.cc b/ui/events/gesture_detection/motion_event_generic.cc
index eff0345024a7d60ebd25cb48a71c98712d75d14a..afda52ad98caf710d5b736e9ab5ee91159980f3f 100644
--- a/ui/events/gesture_detection/motion_event_generic.cc
+++ b/ui/events/gesture_detection/motion_event_generic.cc
@@ -35,7 +35,11 @@ PointerProperties::PointerProperties(float x, float y)
 }
 
 MotionEventGeneric::MotionEventGeneric()
-    : action_(ACTION_CANCEL), id_(0), action_index_(0), button_state_(0) {
+    : action_(ACTION_CANCEL),
+      id_(0),
+      action_index_(0),
+      button_state_(0),
+      flags_(0) {
 }
 
 MotionEventGeneric::MotionEventGeneric(Action action,
@@ -45,7 +49,8 @@ MotionEventGeneric::MotionEventGeneric(Action action,
       event_time_(event_time),
       id_(0),
       action_index_(0),
-      button_state_(0) {
+      button_state_(0),
+      flags_(0) {
   PushPointer(pointer);
 }
 
@@ -55,6 +60,7 @@ MotionEventGeneric::MotionEventGeneric(const MotionEventGeneric& other)
       id_(other.id_),
       action_index_(other.action_index_),
       button_state_(other.button_state_),
+      flags_(other.flags_),
       pointers_(other.pointers_) {
 }
 
@@ -132,6 +138,10 @@ int MotionEventGeneric::GetButtonState() const {
   return button_state_;
 }
 
+int MotionEventGeneric::GetFlags() const {
+  return flags_;
+}
+
 base::TimeTicks MotionEventGeneric::GetEventTime() const {
   return event_time_;
 }