Use standard ICE in Chromoting.

remoting/protocol/content_description.h

Index: remoting/protocol/content_description.h
diff --git a/remoting/protocol/content_description.h b/remoting/protocol/content_description.h
index 748b0f93fb3ae6445ebdf2c47ad5424b1d380fa1..f12582f9797f2942532ce601b8db69255492e856 100644
--- a/remoting/protocol/content_description.h
+++ b/remoting/protocol/content_description.h
@@ -10,7 +10,6 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "remoting/protocol/session_config.h"
-#include "third_party/webrtc/p2p/base/sessiondescription.h"
 
 namespace buzz {
 class XmlElement;
@@ -24,15 +23,13 @@ namespace protocol {
 //
 // This class also provides a type abstraction so that the Chromotocol Session
 // interface does not need to depend on libjingle.
-class ContentDescription : public cricket::ContentDescription {
+class ContentDescription {
  public:
   static const char kChromotingContentName[];
 
   ContentDescription(scoped_ptr<CandidateSessionConfig> config,
                      scoped_ptr<buzz::XmlElement> authenticator_message);
-  ~ContentDescription() override;
-
-  ContentDescription* Copy() const override;
+  ~ContentDescription();
 
   const CandidateSessionConfig* config() const {
     return candidate_config_.get();