Move talk/session/media -> webrtc/pc

The libjingle_p2p target is renamed to rtc_pc.
The libjingle_p2p_unittest test will be renamed in a
separate follow-up CL, to make it possible to run all
trybots successfully for this CL.

BUG=webrtc:5419
R=deadbeef@webrtc.org, pthatcher@webrtc.org, tommi@webrtc.org

Review URL: https://codereview.webrtc.org/1691463002 .

Cr-Commit-Position: refs/heads/master@{#11592}
diff --git a/webrtc/api/webrtcsdp_unittest.cc b/webrtc/api/webrtcsdp_unittest.cc
index 30efa1e..7f54a9d 100644
--- a/webrtc/api/webrtcsdp_unittest.cc
+++ b/webrtc/api/webrtcsdp_unittest.cc
@@ -12,7 +12,6 @@
 #include <string>
 #include <vector>
 
-#include "talk/session/media/mediasession.h"
 #include "webrtc/api/jsepsessiondescription.h"
 #ifdef WEBRTC_ANDROID
 #include "webrtc/api/test/androidtestinitializer.h"
@@ -27,6 +26,7 @@
 #include "webrtc/base/stringutils.h"
 #include "webrtc/media/base/constants.h"
 #include "webrtc/p2p/base/constants.h"
+#include "webrtc/pc/mediasession.h"
 
 using cricket::AudioCodec;
 using cricket::AudioContentDescription;