Replace 4096 with rendering quantum size

third_party/WebKit/Source/modules/webaudio/AudioBufferSourceNode.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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 155 matching lines @@
     unsigned busNumberOfChannels = bus->numberOfChannels();
 
     bool channelCountGood = numberOfChannels && numberOfChannels == busNumberOfChannels;
     ASSERT(channelCountGood);
     if (!channelCountGood)
         return false;
 
     // Sanity check destinationFrameOffset, numberOfFrames.
     size_t destinationLength = bus->length();
 
-    bool isLengthGood = destinationLength <= 4096 && numberOfFrames <= 4096;
+    bool isLengthGood = destinationLength <= AudioUtilities::kRenderQuantumFrames
+        && numberOfFrames <= AudioUtilities::kRenderQuantumFrames;
     ASSERT(isLengthGood);
     if (!isLengthGood)
         return false;
 
     bool isOffsetGood = destinationFrameOffset <= destinationLength && destinationFrameOffset + numberOfFrames <= destinationLength;
     ASSERT(isOffsetGood);
     if (!isOffsetGood)
         return false;
 
     // Potentially zero out initial frames leading up to the offset.
@@ skipping 497 matching lines @@
 {
     audioBufferSourceHandler().start(when, grainOffset, exceptionState);
 }
 
 void AudioBufferSourceNode::start(double when, double grainOffset, double grainDuration, ExceptionState& exceptionState)
 {
     audioBufferSourceHandler().start(when, grainOffset, grainDuration, exceptionState);
 }
 
 } // namespace blink