Extend relocation packing to cover arm64.

tools/relocation_packer/src/leb128.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// LEB128 encoder and decoder for packed ARM relative relocations.
+// LEB128 encoder and decoder for packed relative relocations.
 //
-// Run-length encoded ARM relative relocations consist of a large number
+// Run-length encoded relative relocations consist of a large number
 // of pairs of relatively small positive integer values.  Encoding these as
 // LEB128 saves space.
 //
 // For more on LEB128 see http://en.wikipedia.org/wiki/LEB128.
 
 #ifndef TOOLS_RELOCATION_PACKER_SRC_LEB128_H_
 #define TOOLS_RELOCATION_PACKER_SRC_LEB128_H_
 
 #include <stdint.h>
 #include <vector>
@@ skipping 47 matching lines @@
   // Encoded LEB128 stream.
   std::vector<uint8_t> encoding_;
 
   // Cursor indicating the current stream retrieval point.
   size_t cursor_;
 };
 
 }  // namespace relocation_packer
 
 #endif  // TOOLS_RELOCATION_PACKER_SRC_LEB128_H_