Make ChromeOS screenshots use async readback path

chrome/browser/ui/ash/screenshot_taker.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 CHROME_BROWSER_UI_ASH_SCREENSHOT_TAKER_H_
 #define CHROME_BROWSER_UI_ASH_SCREENSHOT_TAKER_H_
 
 #include "ash/screenshot_delegate.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 54 matching lines @@
       ScreenshotTakerObserver::Result screenshot_result,
       const base::FilePath& screenshot_path);
 
   void AddObserver(ScreenshotTakerObserver* observer);
   void RemoveObserver(ScreenshotTakerObserver* observer);
   bool HasObserver(ScreenshotTakerObserver* observer) const;
 
  private:
   friend class ash::test::ScreenshotTakerTest;
 
+  void GrabWindowSnapshotAsyncCallback(
+      base::FilePath screenshot_path,
+      bool is_partial,
+      int window_idx,
+      scoped_refptr<base::RefCountedBytes> png_data);
+  void GrabPartialWindowSnapshotAsync(aura::Window* window,
+                                      const gfx::Rect& snapshot_bounds,
+                                      Profile* profile,
+                                      base::FilePath screenshot_path);
+  void GrabFullWindowSnapshotAsync(aura::Window* window,
+                                   const gfx::Rect& snapshot_bounds,
+                                   Profile* profile,
+                                   base::FilePath screenshot_path,
+                                   int window_idx);
+
   Profile* GetProfile();
   void SetScreenshotDirectoryForTest(const base::FilePath& directory);
   void SetScreenshotBasenameForTest(const std::string& basename);
   void SetScreenshotProfileForTest(Profile* profile);
 
   Notification* CreateNotification(
       ScreenshotTakerObserver::Result screenshot_result,
       const base::FilePath& screenshot_path);
 
   base::WeakPtrFactory<ScreenshotTaker> factory_;
 
   // The timestamp when the screenshot task was issued last time.
   base::Time last_screenshot_timestamp_;
 
   ObserverList<ScreenshotTakerObserver> observers_;
 
   base::FilePath screenshot_directory_for_test_;
   std::string screenshot_basename_for_test_;
   Profile* profile_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenshotTaker);
 };
 
 #endif  // CHROME_BROWSER_UI_ASH_SCREENSHOT_TAKER_H_