Linux: Change the generic chrome-wrapper script to overwrite symlinks it crea...

chrome/tools/build/linux/chrome-wrapper

 #!/bin/sh
 
 # Copyright (c) 2006-2009 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.
 
 # Running Chromium via this script makes it possible to set Chromium as the
 # default browser directly out of a compile, without needing to package it.
 
 DESKTOP="chromium-devel"
@@ skipping 76 matching lines @@
     LIBDIRS="/lib64 /lib /usr/lib64 /usr/lib"
 fi
 
 echo $MISSING_LIBS | grep -qs libbz2.so.1.0
 if [ $? = 0 ]; then
     for dir in $LIBDIRS
     do
         if [ -e "$dir/libbz2.so.1" ]; then
             LIB_ARCH=$(check_executable "$dir/libbz2.so.1")
             if [ "$CHROME_ARCH" = "$LIB_ARCH" ]; then
-                ln -s "$dir/libbz2.so.1" "$HERE/libbz2.so.1.0"
+                ln -snf "$dir/libbz2.so.1" "$HERE/libbz2.so.1.0"
                 break;
             fi
         fi
     done
 fi
 
 for lib in libnspr4.so.0d libnss3.so.1d libnssutil3.so.1d libplc4.so.0d libplds4.so.0d libsmime3.so.1d libssl3.so.1d
 do
     echo $MISSING_LIBS | grep -qs $lib
     if [ $? = 0 ]; then
         reallib=$(echo $lib | sed 's/\.[01]d$//')
         for dir in $LIBDIRS
         do
             if [ -e "$dir/$reallib" ]; then
                 LIB_ARCH=$(check_executable "$dir/$reallib")
                 if [ "$CHROME_ARCH" = "$LIB_ARCH" ]; then
-                    ln -s "$dir/$reallib" "$HERE/$lib"
+                    ln -snf "$dir/$reallib" "$HERE/$lib"
                     break;
                 fi
             fi
         done
     fi
 done
 
 # Custom version string for this release. This can be used to add a downstream
 # vendor string or release channel information.
 export CHROME_VERSION_EXTRA="custom"
 
 exists_desktop_file || generate_desktop_file
 
 exec "$HERE/chrome" "$@"