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 8baf11c383d8c0a8c3dae552904402a0dc15f56c..a6b5332a0eda142001560f8deef6ee1e420e49fc 100644
--- a/views/widget/widget.cc
+++ b/views/widget/widget.cc
@@ -1036,6 +1036,11 @@ 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);
 }