Split RC4-encrypted records.

net/third_party/nss/ssl/sslimpl.h

Index: net/third_party/nss/ssl/sslimpl.h
===================================================================
--- net/third_party/nss/ssl/sslimpl.h	(revision 185536)
+++ net/third_party/nss/ssl/sslimpl.h	(working copy)
@@ -530,6 +530,9 @@
     PRUint64    cipher_context[MAX_CIPHER_CONTEXT_LLONGS];
 } ssl3KeyMaterial;
 
+/* The number of initial RC4 keystream bytes that have a statistical bias */
+#define SSL3_BIASED_RC4_BYTES 256
+
 /* The DTLS anti-replay window. Defined here because we need it in
  * the cipher spec. Note that this is a ring buffer but left and
  * right represent the true window, with modular arithmetic used to
@@ -568,6 +571,10 @@
     void *             decompressContext;
     PRBool             bypassCiphers;	/* did double bypass (at least) */
     PK11SymKey *       master_secret;
+    unsigned int       rc4EncryptedBytes;  /* The number of bytes that have
+                                            * been encrypted with RC4.  Stop
+                                            * counting after it exceeds
+                                            * SSL3_BIASED_RC4_BYTES. */
     SSL3SequenceNumber write_seq_num;
     SSL3SequenceNumber read_seq_num;
     SSL3ProtocolVersion version;