Allow explicit conversion operators and implement WTF::OwnPtr::operator bool.

third_party/WebKit/Source/platform/audio/HRTFDatabaseLoader.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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 83 matching lines @@
         // Start the asynchronous database loading process.
         m_thread = adoptPtr(Platform::current()->createThread("HRTF database loader"));
         // TODO(alexclarke): Should this be posted as a loading task?
         m_thread->getWebTaskRunner()->postTask(BLINK_FROM_HERE, threadSafeBind(&HRTFDatabaseLoader::loadTask, AllowCrossThreadAccess(this)));
     }
 }
 
 bool HRTFDatabaseLoader::isLoaded()
 {
     MutexLocker locker(m_lock);
-    return m_hrtfDatabase;
+    return m_hrtfDatabase.get();
 }
 
 // This cleanup task is needed just to make sure that the loader thread finishes
 // the load task and thus the loader thread doesn't touch m_thread any more.
 void HRTFDatabaseLoader::cleanupTask(TaskSynchronizer* sync)
 {
     sync->taskCompleted();
 }
 
 void HRTFDatabaseLoader::waitForLoaderThreadCompletion()
 {
     if (!m_thread)
         return;
 
     TaskSynchronizer sync;
     // TODO(alexclarke): Should this be posted as a loading task?
     m_thread->getWebTaskRunner()->postTask(BLINK_FROM_HERE, threadSafeBind(&HRTFDatabaseLoader::cleanupTask, AllowCrossThreadAccess(this), AllowCrossThreadAccess(&sync)));
     sync.waitForTaskCompletion();
     m_thread.clear();
 }
 
 } // namespace blink