Create //webrtc/api:libjingle_peerconnection_api + refactorings.

webrtc/pc/webrtcsessiondescriptionfactory.h

Index: webrtc/pc/webrtcsessiondescriptionfactory.h
diff --git a/webrtc/api/webrtcsessiondescriptionfactory.h b/webrtc/pc/webrtcsessiondescriptionfactory.h
similarity index 97%
rename from webrtc/api/webrtcsessiondescriptionfactory.h
rename to webrtc/pc/webrtcsessiondescriptionfactory.h
index 314679d24f0f9df31d8b47c6a4e6b32c3b45fad3..7572f244ec51ace04fc331eb1eaa65fe4c61c9ed 100644
--- a/webrtc/api/webrtcsessiondescriptionfactory.h
+++ b/webrtc/pc/webrtcsessiondescriptionfactory.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_API_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
-#define WEBRTC_API_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
+#ifndef WEBRTC_PC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
+#define WEBRTC_PC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
 
 #include <memory>
 
@@ -166,4 +166,4 @@ class WebRtcSessionDescriptionFactory : public rtc::MessageHandler,
 };
 }  // namespace webrtc
 
-#endif  // WEBRTC_API_WEBRTCSESSIONDESCRIPTIONFACTORY_H_
+#endif  // WEBRTC_PC_WEBRTCSESSIONDESCRIPTIONFACTORY_H_