[tools/perf] Make remote names url-safe

To avoid issues with quoting/unquoting cloud urls, we remove all
unsafe characters from the remote name.

Bug: 981349
Change-Id: Ia9a17642072d435141eb19d42c0692a5de86558b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1899881
Commit-Queue: Mikhail Khokhlov <khokhlov@google.com>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712689}

tools/perf/core/results_processor/processor.py

@@ -203,8 +203,9 @@ def UploadArtifacts(test_result, upload_bucket, run_identifier):
     if name in [compute_metrics.HISTOGRAM_DICTS_FILE, MEASUREMENTS_NAME]:
       continue
     remote_name = '/'.join([run_identifier, test_result['testPath'], name])
+    urlsafe_remote_name = re.sub(r'[^A-Za-z0-9/.-]+', '_', remote_name)
     artifact['remoteUrl'] = cloud_storage.Insert(
-        upload_bucket, remote_name, artifact['filePath'])
+        upload_bucket, urlsafe_remote_name, artifact['filePath'])
     logging.info('Uploaded %s of %s to %s', name, test_result['testPath'],
                  artifact['remoteUrl'])