Initial views touchui GestureRecognizer support

views/widget/widget.cc

Index: views/widget/widget.cc
diff --git a/views/widget/widget.cc b/views/widget/widget.cc
index 029b92025cc87ea3ba31e3d4d58e2c365c1388ec..55ce4962358f68f2b9966793283fc6e6fd3e5f5c 100644
--- a/views/widget/widget.cc
+++ b/views/widget/widget.cc
@@ -1041,6 +1041,11 @@ ui::TouchStatus Widget::OnTouchEvent(const TouchEvent& event) {
   return static_cast<internal::RootView*>(GetRootView())->OnTouchEvent(event);
 }
 
+bool Widget::OnGestureEvent(const GestureEvent& event) {
+  ScopedEvent scoped(this, event);
+  return static_cast<internal::RootView*>(GetRootView())->OnGestureEvent(event);
+}
+
 bool Widget::ExecuteCommand(int command_id) {
   return widget_delegate_->ExecuteWindowsCommand(command_id);
 }