Update ConstrainedWindowViews appearance according to mock

ui/views/controls/button/custom_button.h

Index: ui/views/controls/button/custom_button.h
diff --git a/ui/views/controls/button/custom_button.h b/ui/views/controls/button/custom_button.h
index 6c158166ab9f13c445af38ad40231140b30ff795..1002fee1332df8cc9b1b26d37f03dea71b879bd7 100644
--- a/ui/views/controls/button/custom_button.h
+++ b/ui/views/controls/button/custom_button.h
@@ -5,6 +5,7 @@
 #ifndef UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 
+#include "base/memory/scoped_ptr.h"
 #include "ui/base/animation/animation_delegate.h"
 #include "ui/base/events/event_constants.h"
 #include "ui/views/controls/button/button.h"
@@ -15,6 +16,8 @@ class ThrobAnimation;
 
 namespace views {
 
+class CustomButtonStateChangedDelegate;
+
 // A button with custom rendering. The common base class of ImageButton and
 // TextButton.
 // Note that this type of button is not focusable by default and will not be
@@ -98,6 +101,11 @@ class VIEWS_EXPORT CustomButton : public Button,
   // Overridden from ui::AnimationDelegate:
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
 
+  // Takes ownership of the delegate.
+  void set_state_changed_delegate(CustomButtonStateChangedDelegate* delegate) {
+    state_changed_delegate_.reset(delegate);
+  }
+
  protected:
   // Construct the Button with a Listener. See comment for Button's ctor.
   explicit CustomButton(ButtonListener* listener);
@@ -142,9 +150,24 @@ class VIEWS_EXPORT CustomButton : public Button,
   // See description above setter.
   bool request_focus_on_press_;
 
+  scoped_ptr<CustomButtonStateChangedDelegate> state_changed_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };
 
+// Delegate for actions taken on state changes by CustomButton.
+class VIEWS_EXPORT CustomButtonStateChangedDelegate {
+public:
+  virtual ~CustomButtonStateChangedDelegate() {}
+  virtual void StateChanged(CustomButton::ButtonState state) = 0;
+
+protected:
+  CustomButtonStateChangedDelegate() {}
+
+private:
+  DISALLOW_COPY_AND_ASSIGN(CustomButtonStateChangedDelegate);
+};
+
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_