Revert of Relanding: Implement RTCConfiguration.iceCandidatePoolSize.

webrtc/p2p/base/port.h

Index: webrtc/p2p/base/port.h
diff --git a/webrtc/p2p/base/port.h b/webrtc/p2p/base/port.h
index 937f3cd0284f058e12fc6a47848ac0ad8ec98204..7ec33bcd0b18169f22998026ee4bd19d37be8830 100644
--- a/webrtc/p2p/base/port.h
+++ b/webrtc/p2p/base/port.h
@@ -107,11 +107,6 @@
       : address(a), proto(p), secure(false) { }
   ProtocolAddress(const rtc::SocketAddress& a, ProtocolType p, bool sec)
       : address(a), proto(p), secure(sec) { }
-
-  bool operator==(const ProtocolAddress& o) const {
-    return address == o.address && proto == o.proto && secure == o.secure;
-  }
-  bool operator!=(const ProtocolAddress& o) const { return !(*this == o); }
 };
 
 typedef std::set<rtc::SocketAddress> ServerAddresses;
@@ -181,15 +176,22 @@
   uint32_t generation() { return generation_; }
   void set_generation(uint32_t generation) { generation_ = generation; }
 
+  // ICE requires a single username/password per content/media line. So the
+  // |ice_username_fragment_| of the ports that belongs to the same content will
+  // be the same. However this causes a small complication with our relay
+  // server, which expects different username for RTP and RTCP.
+  //
+  // To resolve this problem, we implemented the username_fragment(),
+  // which returns a different username (calculated from
+  // |ice_username_fragment_|) for RTCP in the case of ICEPROTO_GOOGLE. And the
+  // username_fragment() simply returns |ice_username_fragment_| when running
+  // in ICEPROTO_RFC5245.
+  //
+  // As a result the ICEPROTO_GOOGLE will use different usernames for RTP and
+  // RTCP. And the ICEPROTO_RFC5245 will use same username for both RTP and
+  // RTCP.
   const std::string username_fragment() const;
   const std::string& password() const { return password_; }
-
-  // May be called when this port was initially created by a pooled
-  // PortAllocatorSession, and is now being assigned to an ICE transport.
-  // Updates the information for candidates as well.
-  void SetIceParameters(int component,
-                        const std::string& username_fragment,
-                        const std::string& password);
 
   // Fired when candidates are discovered by the port. When all candidates
   // are discovered that belong to port SignalAddressReady is fired.