Update includes for webrtc/{base => rtc_base} rename (2/3)

webrtc/video/video_loopback.cc

 /*
  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include <stdio.h>
 
-#include "webrtc/base/flags.h"
+#include "webrtc/rtc_base/flags.h"
 #include "webrtc/test/field_trial.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/test/run_test.h"
 #include "webrtc/video/video_quality_test.h"
 
 namespace webrtc {
 namespace flags {
 
 // Flags common with screenshare loopback, with different default values.
 DEFINE_int(width, 640, "Video width.");
@@ skipping 290 matching lines @@
     return 0;
   }
 
   // InitFieldTrialsFromString needs a reference to an std::string instance,
   // with a scope that outlives the test.
   std::string field_trials = webrtc::flags::FLAG_force_fieldtrials;
   webrtc::test::InitFieldTrialsFromString(field_trials);
   webrtc::test::RunTest(webrtc::Loopback);
   return 0;
 }