<chromium> Cherry-pick https://codereview.chromium.org/137433002 from upstream

This fixes the build with a cross compiler toolchain.
We do not require the functionality of this script but
gyp tries to run it and fails if the specified file
does not exist.

As the upstream issue mentions, this script is "going
away soonish", until then we can keep this patch around.

Reviewed-by: Pierre Rossi <[email protected]>
Change-Id: I5de88fcaf750bad4eec2d72a134a86f75a30453e
Reviewed-by: Zeno Albisser <[email protected]>

Author: bbandix

chromium/build/linux/python_arch.sh

@@ -11,7 +11,9 @@
 #
 
 file_out=$(file --dereference "$1")
-if [ $? -ne 0 ]; then
+# The POSIX spec says that `file` should not exit(1) if the file does not
+# exist, so do our own -e check to catch things.
+if [ $? -ne 0 ] || [ ! -e "$1" ] ; then
   echo unknown
   exit 0
 fi