Create //webrtc/api:libjingle_peerconnection_api + refactorings.

webrtc/pc/dtmfsender_unittest.cc

Index: webrtc/pc/dtmfsender_unittest.cc
diff --git a/webrtc/api/dtmfsender_unittest.cc b/webrtc/pc/dtmfsender_unittest.cc
similarity index 99%
rename from webrtc/api/dtmfsender_unittest.cc
rename to webrtc/pc/dtmfsender_unittest.cc
index 54f3a7b96d6f6a3ec4355bd86b0eb77eb4ddd136..a58c1ec91f5c953f169d8b0cf58c67aa4e0b51e5 100644
--- a/webrtc/api/dtmfsender_unittest.cc
+++ b/webrtc/pc/dtmfsender_unittest.cc
@@ -8,18 +8,18 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "webrtc/api/dtmfsender.h"
+#include "webrtc/pc/dtmfsender.h"
 
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
-#include "webrtc/api/audiotrack.h"
 #include "webrtc/base/fakeclock.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/logging.h"
 #include "webrtc/base/timeutils.h"
+#include "webrtc/pc/audiotrack.h"
 
 using webrtc::AudioTrackInterface;
 using webrtc::AudioTrack;