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diff --git a/chrome/views/controls/button/custom_button.h b/chrome/views/controls/button/custom_button.h
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+++ b/chrome/views/controls/button/custom_button.h
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+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
+#define CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
+
+#include "chrome/common/animation.h"
+#include "chrome/views/controls/button/button.h"
+
+class ThrobAnimation;
+
+namespace views {
+
+// A button with custom rendering. The common base class of IconButton and
+// TextButton.
+class CustomButton : public Button,
+                     public AnimationDelegate {
+ public:
+  virtual ~CustomButton();
+
+  // Possible states
+  enum ButtonState {
+    BS_NORMAL = 0,
+    BS_HOT,
+    BS_PUSHED,
+    BS_DISABLED,
+    BS_COUNT
+  };
+
+  // Get/sets the current display state of the button.
+  ButtonState state() const { return state_; }
+  void SetState(ButtonState state);
+
+  // Starts throbbing. See HoverAnimation for a description of cycles_til_stop.
+  void StartThrobbing(int cycles_til_stop);
+
+  // Set how long the hover animation will last for.
+  void SetAnimationDuration(int duration);
+
+  // Overridden from View:
+  virtual void SetEnabled(bool enabled);
+  virtual bool IsEnabled() const;
+  virtual bool IsFocusable() const;
+
+ protected:
+  // Construct the Button with a Listener. See comment for Button's ctor.
+  explicit CustomButton(ButtonListener* listener);
+
+  // Returns true if the event is one that can trigger notifying the listener.
+  // This implementation returns true if the left mouse button is down.
+  virtual bool IsTriggerableEvent(const MouseEvent& e);
+
+  // Overridden from View:
+  virtual bool AcceleratorPressed(const Accelerator& accelerator);
+  virtual bool OnMousePressed(const MouseEvent& e);
+  virtual bool OnMouseDragged(const MouseEvent& e);
+  virtual void OnMouseReleased(const MouseEvent& e, bool canceled);
+  virtual void OnMouseEntered(const MouseEvent& e);
+  virtual void OnMouseMoved(const MouseEvent& e);
+  virtual void OnMouseExited(const MouseEvent& e);
+  virtual bool OnKeyPressed(const KeyEvent& e);
+  virtual bool OnKeyReleased(const KeyEvent& e);
+  virtual void OnDragDone();
+  virtual void ShowContextMenu(int x, int y, bool is_mouse_gesture);
+  virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
+
+  // Overridden from AnimationDelegate:
+  virtual void AnimationProgressed(const Animation* animation);
+
+  // The button state (defined in implementation)
+  ButtonState state_;
+
+  // Hover animation.
+  scoped_ptr<ThrobAnimation> hover_animation_;
+
+ private:
+  // Set / test whether the button is highlighted (in the hover state).
+  void SetHighlighted(bool highlighted);
+  bool IsHighlighted() const;
+
+  // Returns whether the button is pushed.
+  bool IsPushed() const;
+
+  // Should we animate when the state changes? Defaults to true, but false while
+  // throbbing.
+  bool animate_on_state_change_;
+
+  DISALLOW_COPY_AND_ASSIGN(CustomButton);
+};
+
+}  // namespace views
+
+#endif  // CHROME_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_