Linux: Dynamically load libudev.

chrome/installer/linux/common/symlinks.include

 NSS_FILES="libnspr4.so.0d libplds4.so.0d libplc4.so.0d libssl3.so.1d \
     libnss3.so.1d libsmime3.so.1d libnssutil3.so.1d"
 
 add_nss_symlinks() {
   get_lib_dir
   for f in $NSS_FILES
   do
     target=$(echo $f | sed 's/\.[01]d$//')
     if [ -f "/$LIBDIR/$target" ]; then
       ln -snf "/$LIBDIR/$target" "@@INSTALLDIR@@/$f"
     elif [ -f "/usr/$LIBDIR/$target" ]; then
       ln -snf "/usr/$LIBDIR/$target" "@@INSTALLDIR@@/$f"
     else
       echo $f not found in "/$LIBDIR/$target" or "/usr/$LIBDIR/$target".
       exit 1
     fi
   done
 }
 
 remove_nss_symlinks() {
   for f in $NSS_FILES
   do
     rm -rf "@@INSTALLDIR@@/$f"
   done
 }
 
-# Fedora 18 now has libudev.so.1. http://crbug.com/145160
-# Same for Ubuntu 13.04. http://crbug.com/226002
-LIBUDEV_0=libudev.so.0
-LIBUDEV_1=libudev.so.1
-
-add_udev_symlinks() {
-  get_lib_dir
-  if [ -f "/$LIBDIR/$LIBUDEV_0" -o -f "/usr/$LIBDIR/$LIBUDEV_0" -o -f "/lib/$LIBUDEV_0" ]; then
-    return 0
-  fi
-
-  if [ -f "/$LIBDIR/$LIBUDEV_1" ]; then
-    ln -snf "/$LIBDIR/$LIBUDEV_1" "@@INSTALLDIR@@/$LIBUDEV_0"
-  elif [ -f "/usr/$LIBDIR/$LIBUDEV_1" ];
-  then
-    ln -snf "/usr/$LIBDIR/$LIBUDEV_1" "@@INSTALLDIR@@/$LIBUDEV_0"
-  else
-    echo "$LIBUDEV_1" not found in "$LIBDIR" or "/usr/$LIBDIR".
-    exit 1
-  fi
+remove_udev_symlinks() {
+  rm -rf "@@INSTALLDIR@@/libudev.so.0"
 }
-
-remove_udev_symlinks() {
-  rm -rf "@@INSTALLDIR@@/$LIBUDEV_0"
-}