Re-land: Ensure that ArrayBuffers actively being used by the Web Audio API cannot be neutered

Source/wtf/ArrayBufferView.cpp

Index: Source/wtf/ArrayBufferView.cpp
diff --git a/Source/wtf/ArrayBufferView.cpp b/Source/wtf/ArrayBufferView.cpp
index 6c2c9bc84971d1291d8ea3eb80872a71f3cac2d8..a9d3eba457a57240408795e472d2c98bdb924f4b 100644
--- a/Source/wtf/ArrayBufferView.cpp
+++ b/Source/wtf/ArrayBufferView.cpp
@@ -33,6 +33,7 @@ namespace WTF {
 ArrayBufferView::ArrayBufferView(PassRefPtr<ArrayBuffer> buffer,
                        unsigned byteOffset)
         : m_byteOffset(byteOffset)
+        , m_isNeuterable(true)
         , m_buffer(buffer)
         , m_prevView(0)
         , m_nextView(0)