Allow method tracing for run-test

Adds "--trace" option to enable method tracing.

Bug: 11683397
Change-Id: I20a6b25c71067eafd848db26f13d62cfdb9a6159
diff --git a/test/run-all-tests b/test/run-all-tests
index 885ee44..25d5c5f 100755
--- a/test/run-all-tests
+++ b/test/run-all-tests
@@ -80,6 +80,9 @@
     elif [ "x$1" = "x--64" ]; then
         run_args="${run_args} --64"
         shift
+    elif [ "x$1" = "x--trace" ]; then
+        run_args="${run_args} --trace"
+        shift
     elif expr "x$1" : "x--" >/dev/null 2>&1; then
         echo "unknown $0 option: $1" 1>&2
         usage="yes"