Add support for blue buttons.

ui/views/controls/button/blue_button.h

+// Copyright 2013 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 UI_VIEWS_CONTROLS_BUTTON_BLUE_BUTTON_H_
+#define UI_VIEWS_CONTROLS_BUTTON_BLUE_BUTTON_H_
+
+#include "base/compiler_specific.h"
+#include "base/string16.h"
+#include "ui/views/controls/button/label_button.h"
+
+namespace views {
+
+// A class representing a blue button.
+class VIEWS_EXPORT BlueButton : public LabelButton {
+ public:
+  static const char kViewClassName[];
+
+  BlueButton(ButtonListener* listener, const base::string16& text);
+  virtual ~BlueButton();
+
+ private:
+  // Overridden from LabelButton:
+  virtual const char* GetClassName() const OVERRIDE;
+  virtual const ui::Animation* GetThemeAnimation() const OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(BlueButton);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_CONTROLS_BUTTON_BLUE_BUTTON_H_