FileSystem: Migrate ExecutionContextTask to WTF::Closure

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

 /*
  * 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 70 matching lines @@
 bool FileSystemCallbacksBase::shouldScheduleCallback() const {
   return !shouldBlockUntilCompletion() && m_executionContext &&
          m_executionContext->isContextSuspended();
 }
 
 template <typename CB, typename CBArg>
 void FileSystemCallbacksBase::invokeOrScheduleCallback(CB* callback,
                                                        CBArg arg) {
   DCHECK(callback);
   if (callback) {
-    if (shouldScheduleCallback())
+    if (shouldScheduleCallback()) {
       DOMFileSystem::scheduleCallback(
           m_executionContext.get(),
-          createSameThreadTask(&CB::invoke, wrapPersistent(callback), arg));
-    else
+          WTF::bind(&CB::invoke, wrapPersistent(callback), arg));
+    } else {
       callback->invoke(arg);
+    }
   }
   m_executionContext.clear();
 }
 
 template <typename CB, typename CBArg>
 void FileSystemCallbacksBase::handleEventOrScheduleCallback(CB* callback,
                                                             CBArg* arg) {
   DCHECK(callback);
   if (callback) {
-    if (shouldScheduleCallback())
+    if (shouldScheduleCallback()) {
       DOMFileSystem::scheduleCallback(
           m_executionContext.get(),
-          createSameThreadTask(&CB::handleEvent, wrapPersistent(callback),
-                               wrapPersistent(arg)));
-    else
+          WTF::bind(&CB::handleEvent, wrapPersistent(callback),
+                    wrapPersistent(arg)));
+    } else {
       callback->handleEvent(arg);
+    }
   }
   m_executionContext.clear();
 }
 
 template <typename CB>
 void FileSystemCallbacksBase::handleEventOrScheduleCallback(CB* callback) {
   DCHECK(callback);
   if (callback) {
-    if (shouldScheduleCallback())
+    if (shouldScheduleCallback()) {
       DOMFileSystem::scheduleCallback(
           m_executionContext.get(),
-          createSameThreadTask(&CB::handleEvent, wrapPersistent(callback)));
-    else
+          WTF::bind(&CB::handleEvent, wrapPersistent(callback)));
+    } else {
       callback->handleEvent();
+    }
   }
   m_executionContext.clear();
 }
 
 // ScriptErrorCallback --------------------------------------------------------
 
 // static
 ScriptErrorCallback* ScriptErrorCallback::wrap(ErrorCallback* callback) {
   // DOMFileSystem operations take an optional (nullable) callback. If a
   // script callback was not passed, don't bother creating a dummy wrapper
@@ skipping 282 matching lines @@
                              DOMFileSystemBase* fileSystem)
     : FileSystemCallbacksBase(errorCallback, fileSystem, context),
       m_successCallback(successCallback) {}
 
 void VoidCallbacks::didSucceed() {
   if (m_successCallback)
     handleEventOrScheduleCallback(m_successCallback.release());
 }
 
 }  // namespace blink