Move non-browser specific ScreenshotTaker code to ui/snapshot.

chrome/browser/ui/ash/chrome_screenshot_taker.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 CHROME_BROWSER_UI_ASH_CHROME_SCREENSHOT_TAKER_H_
+#define CHROME_BROWSER_UI_ASH_CHROME_SCREENSHOT_TAKER_H_
+
+#include "ash/screenshot_delegate.h"
+#include "chrome/browser/notifications/notification.h"
+#include "components/screenshot_taker/screenshot_taker.h"
+
+class ChromeScreenshotTaker : public ash::ScreenshotDelegate,
+                              public ScreenshotTakerClient,
+                              public ScreenshotTakerObserver {
+ public:
+  ChromeScreenshotTaker();
+  ~ChromeScreenshotTaker() override;
+
+  ScreenshotTaker* screenshot_taker() { return screenshot_taker_.get(); }
+
+  // ash::ScreenshotDelegate:
+  void HandleTakeScreenshotForAllRootWindows() override;
+  void HandleTakePartialScreenshot(aura::Window* window,
+                                   const gfx::Rect& rect) override;
+  bool CanTakeScreenshot() override;
+
+  // ScreenshotTakerClient:
+  void PrepareWritableFileAndRunOnBlockingPool(
+      const base::FilePath& path,
+      WritableFileCallback callback_on_blocking_pool) override;
+
+  // ScreenshotTakerObserver:
+  void OnScreenshotCompleted(ScreenshotTakerObserver::Result result,
+                             const base::FilePath& screenshot_path) override;
+
+ private:
+#if defined(OS_CHROMEOS)
+  Notification* CreateNotification(
+      ScreenshotTakerObserver::Result screenshot_result,
+      const base::FilePath& screenshot_path);
+#endif
+
+  scoped_ptr<ScreenshotTaker> screenshot_taker_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeScreenshotTaker);
+};
+
+#endif  // CHROME_BROWSER_UI_ASH_CHROME_SCREENSHOT_TAKER_H_