Oilpan: HRTF dababase loader thread should be attached to Oilpan

Source/platform/audio/HRTFDatabaseLoader.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:
  *
  * 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 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef HRTFDatabaseLoader_h
 #define HRTFDatabaseLoader_h
 
+#include "platform/WebThreadSupportingGC.h"
 #include "platform/audio/HRTFDatabase.h"
 #include "platform/heap/Handle.h"
-#include "public/platform/WebThread.h"
 #include "wtf/HashMap.h"
 #include "wtf/ThreadingPrimitives.h"
 
 namespace blink {
 
 // HRTFDatabaseLoader will asynchronously load the default HRTFDatabase in a new thread.
 
 class PLATFORM_EXPORT HRTFDatabaseLoader final : public GarbageCollectedFinalized<HRTFDatabaseLoader> {
 public:
     // Lazily creates a HRTFDatabaseLoader (if not already created) for the given sample-rate
@@ skipping 25 matching lines @@
     explicit HRTFDatabaseLoader(float sampleRate);
 
     // If it hasn't already been loaded, creates a new thread and initiates asynchronous loading of the default database.
     // This must be called from the main thread.
     void loadAsynchronously();
 
     // Holding a m_lock is required when accessing m_hrtfDatabase since we access it from multiple threads.
     Mutex m_lock;
     OwnPtr<HRTFDatabase> m_hrtfDatabase;
 
-    OwnPtr<WebThread> m_databaseLoaderThread;
+    OwnPtr<WebThreadSupportingGC> m_thread;
 
     float m_databaseSampleRate;
 };
 
 } // namespace blink
 
 #endif // HRTFDatabaseLoader_h