Relanding Switched main WebRTC browser tests to use a more realistic video

chrome/browser/media/webrtc_browsertest_perf.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_PERF_H_
 #define CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_PERF_H_
 
 namespace base {
 class DictionaryValue;
 }
 
+namespace test {
+
 // These functions takes parsed data (on one peer connection) from the
 // peerConnectionDataStore object that is backing webrtc-internals and prints
 // metrics they consider interesting using testing/perf/perf_test.h primitives.
 // The idea is to put as many webrtc-related metrics as possible into the
 // dashboard and thereby track it for regressions.
 //
 // These functions expect to run under googletest and will use EXPECT_ and
 // ASSERT_ macros to signal failure.
 void PrintBweForVideoMetrics(const base::DictionaryValue& pc_dict);
 void PrintMetricsForAllStreams(const base::DictionaryValue& pc_dict);
 
+}  // namespace test
+
 #endif  // CHROME_BROWSER_MEDIA_WEBRTC_BROWSERTEST_PERF_H_