Lands http://codereview.chromium.org/194014 for Oshima:...

views/controls/button/native_button_gtk.h

Index: views/controls/button/native_button_gtk.h
===================================================================
--- views/controls/button/native_button_gtk.h	(revision 25662)
+++ views/controls/button/native_button_gtk.h	(working copy)
@@ -33,15 +33,15 @@
   virtual void CreateNativeControl();
   virtual void NativeControlCreated(GtkWidget* widget);
 
+  // Invoked when the user clicks on the button.
+  virtual void OnClicked();
+
   // Returns true if this button is actually a checkbox or radio button.
   virtual bool IsCheckbox() const { return false; }
 
  private:
   static void CallClicked(GtkButton* widget, NativeButtonGtk* button);
 
-  // Invoked when the user clicks on the button.
-  void OnClicked();
-
   // The NativeButton we are bound to.
   NativeButton* native_button_;
 
@@ -59,10 +59,25 @@
   explicit NativeCheckboxGtk(Checkbox* checkbox);
 
  private:
+  static void CallClicked(GtkButton* widget, NativeCheckboxGtk* button);
+
   virtual void CreateNativeControl();
 
+  // Invoked when the user clicks on the button.
+  virtual void OnClicked();
+
+  // Overidden from NativeButtonWrapper
+  virtual void UpdateChecked();
+
   // Returns true if this button is actually a checkbox or radio button.
   virtual bool IsCheckbox() const { return true; }
+
+  Checkbox* checkbox_;
+
+  // a flag to prevent OnClicked event when updating
+  // gtk control via API gtk_toggle_button_set_active.
+  bool deliver_click_event_;
+
   DISALLOW_COPY_AND_ASSIGN(NativeCheckboxGtk);
 };