Add a missing file to the build to appease the dynamic linker.

sdch/SConscript

 # Copyright (c) 2006-2008 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.
 
 import re
 
 Import('env')
 
 env = env.Clone(OPEN_VCDIFF_DIR='open-vcdiff')
 
 cpppath = [
     '$OPEN_VCDIFF_DIR/src',
 ]
 
 if env.Bit('windows'):
   cpppath.append('$OPEN_VCDIFF_DIR/vsprojects')
 
 env.Prepend(CPPPATH = cpppath)
 
 input_files = [
     '$OPEN_VCDIFF_DIR/src/addrcache.cc',
     '$OPEN_VCDIFF_DIR/src/adler32.c',
     '$OPEN_VCDIFF_DIR/src/blockhash.cc',
     '$OPEN_VCDIFF_DIR/src/codetable.cc',
     '$OPEN_VCDIFF_DIR/src/decodetable.cc',
     '$OPEN_VCDIFF_DIR/src/encodetable.cc',
     '$OPEN_VCDIFF_DIR/src/headerparser.cc',
+    '$OPEN_VCDIFF_DIR/src/instruction_map.cc',
     '$OPEN_VCDIFF_DIR/src/logging.cc',
     '$OPEN_VCDIFF_DIR/src/varint_bigendian.cc',
     '$OPEN_VCDIFF_DIR/src/vcdecoder.cc',
     '$OPEN_VCDIFF_DIR/src/vcdiffengine.cc',
 ]
 
 env.ChromeStaticLibrary('sdch', input_files)
 
 env.ChromeMSVSProject('$SDCH_DIR/sdch.vcproj',
                 guid='{F54ABC59-5C00-414A-A9BA-BAF26D1699F0}')
@@ skipping 78 matching lines @@
 
     header = '/* src/config.h.  Generated by SCons.  */\n'
     open(str(target[0]), 'w').write(header + contents)
 
   # varlist['DEFINES'] below makes the target config.h file depend
   # on the list of definitions in the passed-in $DEFINES variable.
   env.Command('$OPEN_VCDIFF_DIR/src/config.h',
               '$OPEN_VCDIFF_DIR/src/config.h.in',
               Action(AutoConfig, varlist=['DEFINES']),
               DEFINES=defines)