Implement input type=color UI

content/public/browser/color_chooser.h

+// 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 CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
+#define CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_
+#pragma once
+
+#include "third_party/skia/include/core/SkColor.h"
+
+class RenderViewHost;
+
+namespace content {
+
+// Abstraction object for color choosers for each platforms.
+class ColorChooser {
+ public:
+  virtual ~ColorChooser() {}
+
+  virtual RenderViewHost* GetRenderViewHost() const = 0;
+  virtual int GetIdentifier() const = 0;
+
+  virtual void End() = 0;
+  virtual void SetSelectedColor(SkColor color) = 0;
+};
+
+}
+
+#endif  // CONTENT_PUBLIC_BROWSER_COLOR_CHOOSER_H_