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/videotrack_unittest.cc b/webrtc/api/videotrack_unittest.cc
index face9f9..0f82e18 100644
--- a/webrtc/api/videotrack_unittest.cc
+++ b/webrtc/api/videotrack_unittest.cc
@@ -10,7 +10,6 @@
 
 #include <string>
 
-#include "talk/session/media/channelmanager.h"
 #include "webrtc/api/remotevideocapturer.h"
 #include "webrtc/api/test/fakevideotrackrenderer.h"
 #include "webrtc/api/videosource.h"
@@ -19,6 +18,7 @@
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/media/base/fakemediaengine.h"
 #include "webrtc/media/engine/webrtcvideoframe.h"
+#include "webrtc/pc/channelmanager.h"
 
 using webrtc::FakeVideoTrackRenderer;
 using webrtc::VideoSource;