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 acc7108bbf5940db385b0d45726db80fc2e1a7f3..50cf481a7e737ef4df71e36330810a21d0ef843c 100644
--- a/views/widget/widget.cc
+++ b/views/widget/widget.cc
@@ -1052,6 +1052,11 @@ 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);
 }