Roll Linux reference build to official build 30.0.1599.33

chrome_linux/installer/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_0"
+}