QUIC - Some sketching of the crypto handshake.

net/quic/crypto/crypto_framer.h

Index: net/quic/crypto/crypto_framer.h
===================================================================
--- net/quic/crypto/crypto_framer.h	(revision 184750)
+++ net/quic/crypto/crypto_framer.h	(working copy)
@@ -42,6 +42,11 @@
 
   virtual ~CryptoFramer();
 
+  // ParseMessage parses exactly one message from the given StringPiece. If
+  // there is an error, the message is truncated, or the message has trailing
+  // garbage then NULL will be returned.
+  static CryptoHandshakeMessage* ParseMessage(base::StringPiece in);
+
   // Set callbacks to be called from the framer.  A visitor must be set, or
   // else the framer will crash.  It is acceptable for the visitor to do
   // nothing.  If this is called multiple times, only the last visitor
@@ -66,7 +71,8 @@
 
   // Returns a new QuicData owned by the caller that contains a serialized
   // |message|, or NULL if there was an error.
-  QuicData* ConstructHandshakeMessage(const CryptoHandshakeMessage& message);
+  static QuicData* ConstructHandshakeMessage(
+      const CryptoHandshakeMessage& message);
 
  private:
   // Clears per-message state.  Does not clear the visitor.