Require use of AudioBus::create() to avoid ref-counting issues

Source/core/platform/audio/SincResampler.cpp

 /*
  * Copyright (C) 2011 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 116 matching lines @@
     }
 }
 
 void SincResampler::consumeSource(float* buffer, unsigned numberOfSourceFrames)
 {
     ASSERT(m_sourceProvider);
     if (!m_sourceProvider)
         return;
     
     // Wrap the provided buffer by an AudioBus for use by the source provider.
-    AudioBus bus(1, numberOfSourceFrames, false);
+    RefPtr<AudioBus> bus = AudioBus::create(1, numberOfSourceFrames, false);
 
     // FIXME: Find a way to make the following const-correct:
-    bus.setChannelMemory(0, buffer, numberOfSourceFrames);
+    bus->setChannelMemory(0, buffer, numberOfSourceFrames);
     
-    m_sourceProvider->provideInput(&bus, numberOfSourceFrames);
+    m_sourceProvider->provideInput(bus.get(), numberOfSourceFrames);
 }
 
 namespace {
 
 // BufferSourceProvider is an AudioSourceProvider wrapping an in-memory buffer.
 
 class BufferSourceProvider : public AudioSourceProvider {
 public:
     BufferSourceProvider(const float* source, size_t numberOfSourceFrames)
         : m_source(source)
@@ skipping 312 matching lines @@
 
         // Step (4)
         // Refresh the buffer with more input.
         consumeSource(r5, m_blockSize);
     }
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)