Escape characters in uploaded summary.

Bug: 1161286
Change-Id: Ieadca6a052085daaf5ef4a4099fc46e70363f5a2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2630737
Auto-Submit: benjamin joyce <bjoyce@chromium.org>
Reviewed-by: Jared Saul <jsaul@google.com>
Commit-Queue: Jared Saul <jsaul@google.com>
Cr-Commit-Position: refs/heads/master@{#843835}

build/android/pylib/base/result_sink.py

@@ -82,10 +82,10 @@ class ResultSinkClient(object):
     report_check_size = MAX_REPORT_LEN - 45
     test_log_formatted = cgi.escape(test_log)
     if len(test_log) > report_check_size:
-      test_log_formatted = ('<pre>' + test_log[:report_check_size] +
+      test_log_formatted = ('<pre>' + test_log_formatted[:report_check_size] +
                             '...Full output in Artifact.</pre>')
     elif test_log:
-      test_log_formatted = '<pre>' + test_log + '</pre>'
+      test_log_formatted = '<pre>' + test_log_formatted + '</pre>'
 
     tr = {
         'expected': expected,