Move RtpExtension to api/ directory and config.h/.cc to call/.

webrtc/api/rtpparameters_unittest.cc

 /*
  *  Copyright (c) 2017 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 "webrtc/config.h"
+#include <utility>
 
-#include <vector>
+#include "webrtc/api/rtpparameters.h"
+#include "webrtc/test/gtest.h"
 
-#include "webrtc/rtc_base/gunit.h"
+namespace webrtc {
 
 using webrtc::RtpExtension;
 
 static const char kExtensionUri1[] = "extension-uri1";
 static const char kExtensionUri2[] = "extension-uri2";
 
 static const RtpExtension kExtension1(kExtensionUri1, 1);
 static const RtpExtension kExtension1Encrypted(kExtensionUri1, 10, true);
 static const RtpExtension kExtension2(kExtensionUri2, 2);
 
@@ skipping 14 matching lines @@
   EXPECT_EQ(1u, filtered.size());
   EXPECT_EQ(std::vector<RtpExtension>{kExtension1Encrypted}, filtered);
 
   extensions.clear();
   extensions.push_back(kExtension1);
   extensions.push_back(kExtension2);
   filtered = RtpExtension::FilterDuplicateNonEncrypted(extensions);
   EXPECT_EQ(2u, filtered.size());
   EXPECT_EQ(extensions, filtered);
 }
+}  // namespace webrtc