Fix push_basic.sh

This CL changes the check for base URL to a query to the json endpoint.
This makes the test pass on the trybot.

BUG=353718

Review URL: https://codereview.chromium.org/1160273005

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@295538 0039d316-1c4b-4281-b951-d872f2087c98

tests/push-basic.sh

@@ -44,8 +44,9 @@ setup_gitgit
        --data-urlencode xsrf_token="$(print_xsrf_token)" \
        $URL/edit
 
+  API=$(echo $URL | sed -e 's/\([0-9]\+\)$/api\/\1/')
   test_expect_success "Base URL contains branch name" \
-      "curl -s $($GIT_CL_STATUS --field=url) | grep 'URL:[[:space:]]*[^<]' | grep -q '@master'"
+      "curl -s $API | python -mjson.tool | grep base_url | grep -q '@master'"
 
   test_expect_success "git-cl land ok" \
     "$GIT_CL land -f --no-oauth2"