[DevTools] Move eye dropper functionality from protocol to embedder

content/browser/devtools/protocol/color_picker.h

-// Copyright 2014 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_BROWSER_DEVTOOLS_PROTOCOL_COLOR_PICKER_H_
-#define CONTENT_BROWSER_DEVTOOLS_PROTOCOL_COLOR_PICKER_H_
-
-#include "base/callback.h"
-#include "base/macros.h"
-#include "content/public/browser/readback_types.h"
-#include "content/public/browser/render_widget_host.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-
-namespace blink {
-class WebMouseEvent;
-}
-
-namespace content {
-
-class RenderWidgetHostImpl;
-
-namespace protocol {
-
-class ColorPicker {
- public:
-  typedef base::Callback<void(int, int, int, int)> ColorPickedCallback;
-
-  explicit ColorPicker(ColorPickedCallback callback);
-  virtual ~ColorPicker();
-
-  void SetRenderWidgetHost(RenderWidgetHostImpl* host);
-  void SetEnabled(bool enabled);
-  void OnSwapCompositorFrame();
-
- private:
-  void UpdateFrame();
-  void ResetFrame();
-  void FrameUpdated(const SkBitmap&, ReadbackResponse);
-  bool HandleMouseEvent(const blink::WebMouseEvent& event);
-  void UpdateCursor();
-
-  ColorPickedCallback callback_;
-  bool enabled_;
-  SkBitmap frame_;
-  int last_cursor_x_;
-  int last_cursor_y_;
-  RenderWidgetHost::MouseEventCallback mouse_event_callback_;
-  RenderWidgetHostImpl* host_;
-  base::WeakPtrFactory<ColorPicker> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ColorPicker);
-};
-
-}  // namespace protocol
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_DEVTOOLS_PROTOCOL_COLOR_PICKER_H_