Merge 96151 - Rapidly refreshing a feMorphology[erode] with r=0 can sometimes cause display corru...

Source/JavaScriptCore/wtf/ByteArray.h

 /*
  * Copyright (C) 2009 Apple 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 52 matching lines @@
         }
 
         unsigned char get(unsigned index) const
         {
             ASSERT(index < m_size);
             return m_data[index];
         }
 
         unsigned char* data() { return m_data; }
 
+        void clear() { memset(m_data, 0, m_size); }
+
         void deref()
         {
             if (derefBase()) {
                 // We allocated with new unsigned char[] in create(),
                 // and then used placement new to construct the object.
                 this->~ByteArray();
                 delete[] reinterpret_cast<unsigned char*>(this);
             }
         }
 
@@ skipping 12 matching lines @@
         unsigned char m_data[INT_MAX];
 #else
         unsigned char m_data[];
 #endif
     };
 } // namespace WTF
 
 using WTF::ByteArray;
 
 #endif