Implement input type=color UI

chrome/browser/ui/color_chooser.h

Index: chrome/browser/ui/color_chooser.h
diff --git a/chrome/browser/ui/color_chooser.h b/chrome/browser/ui/color_chooser.h
new file mode 100644
index 0000000000000000000000000000000000000000..19b388ac1f2c35e09e77ce43a7bb31d2efa0a476
--- /dev/null
+++ b/chrome/browser/ui/color_chooser.h
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 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_BROWSER_UI_COLOR_CHOOSER_H_
+#define CHROME_BROWSER_UI_COLOR_CHOOSER_H_
+#pragma once
+
+#include "content/public/browser/color_chooser.h"
+
+class RenderViewHost;
+
+// Abstraction object for color choosers for each platforms.
+class ColorChooser : public content::ColorChooser {
+ public:
+  static ColorChooser* Create(
+      int identifier, RenderViewHost* rvh, SkColor initial_color);
+};
+
+#endif  // CHROME_BROWSER_UI_COLOR_CHOOSER_H_