[asan] Support per-application flags in the Android setup script.

llvm-svn: 243494

compiler-rt/lib/asan/scripts/asan_device_setup

@@ -273,6 +273,7 @@ fi
 cat <<EOF >"$TMPDIR/app_process.wrap"
 #!/system/bin/sh-from-zygote
 ASAN_OPTIONS=$ASAN_OPTIONS \\
+ASAN_ACTIVATION_OPTIONS=include_if_exists=/data/local/tmp/asan.options.%b \\
 LD_PRELOAD=\$LD_PRELOAD:$ASAN_RT \\
 exec /system/bin/app_process32 \$@