Prepare for move-only PassOwnPtr in the remaining directories.

third_party/WebKit/public/platform/WebFileSystemCallbacks.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 46 matching lines @@
     WebFileSystemCallbacks& operator=(const WebFileSystemCallbacks& c)
     {
         assign(c);
         return *this;
     }
 
     BLINK_PLATFORM_EXPORT void reset();
     BLINK_PLATFORM_EXPORT void assign(const WebFileSystemCallbacks&);
 
 #if INSIDE_BLINK
-    BLINK_PLATFORM_EXPORT WebFileSystemCallbacks(const WTF::PassOwnPtr<AsyncFileSystemCallbacks>&);
+    BLINK_PLATFORM_EXPORT WebFileSystemCallbacks(WTF::PassOwnPtr<AsyncFileSystemCallbacks>&&);

[jbroman, 2016/04/25 15:08:27]

ditto

 #endif
 
     // Callback for WebFileSystem's various operations that don't require
     // return values.
     BLINK_PLATFORM_EXPORT void didSucceed();
 
     // Callback for WebFileSystem::readMetadata. Called with the file metadata
     // for the requested path.
     BLINK_PLATFORM_EXPORT void didReadMetadata(const WebFileInfo&);
 
@@ skipping 29 matching lines @@
     // is fullfilled.
     BLINK_PLATFORM_EXPORT bool shouldBlockUntilCompletion() const;
 
 private:
     WebPrivatePtr<WebFileSystemCallbacksPrivate> m_private;
 };
 
 } // namespace blink
 
 #endif