Remove OwnPtr::release() calls in modules/ (part 2).

third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp

Index: third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp
diff --git a/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp b/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp
index faf5dbe6e085b93e595ea2f7e63d95cdc97283aa..acc185d134afac26ff3fbb3aa7d8af3ef952a388 100644
--- a/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp
+++ b/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp
@@ -63,7 +63,7 @@ public:
     virtual ~CallbackWrapper() { }
     PassOwnPtr<AsyncFileSystemCallbacks> release()
     {
-        return m_callbacks.release();
+        return std::move(m_callbacks);
     }
 
     DEFINE_INLINE_TRACE() { }