[telemetry] Make single-benchmark measurements protected and undiscoverable.

tools/perf/measurements/blink_perf.js

Index: tools/perf/measurements/blink_perf.js
diff --git a/tools/perf/measurements/blink_perf.js b/tools/perf/measurements/blink_perf.js
deleted file mode 100644
index 155f22fce7b5c305f606e3839b64b4fe076bdba2..0000000000000000000000000000000000000000
--- a/tools/perf/measurements/blink_perf.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-(function() {
-window.testRunner = {};
-window.testRunner.isDone = false;
-
-testRunner.waitUntilDone = function() {};
-testRunner.dumpAsText = function() {};
-testRunner.notifyDone = function() {
-  this.isDone = true;
-};
-
-window.GCController = {};
-
-GCController.collect = function() {
-  gc();
-};
-})();