Fix crash when an SSL key-log file couldn't be opened.

net/third_party/nss/README.chromium

Index: net/third_party/nss/README.chromium
diff --git a/net/third_party/nss/README.chromium b/net/third_party/nss/README.chromium
index b16bb66d7b5f14ed2bdbceb1e05bb0ba9d945c44..fd4238fdd47cf1fd4c6de3a979b18a068867bb14 100644
--- a/net/third_party/nss/README.chromium
+++ b/net/third_party/nss/README.chromium
@@ -72,6 +72,7 @@ Patches:
   * Move SSL keylogging out from behind the TRACE and DEBUG defines and add
     support for CLIENT_RANDOM keylogging to support ECDHE-RSA and others.
     patches/keylog.patch
+    https://bugzilla.mozilla.org/show_bug.cgi?id=762763
 
   * SSL_GetChannelInfo and SSL_GetNegotiatedHostInfo should use cwSpec
     instead of crSpec to support False Start.
@@ -81,6 +82,9 @@ Patches:
   * Add support for extracting the tls-unique channel binding value
     patches/tlsunique.patch
 
+  * Don't crash when the SSL keylog file cannot be opened.
+    patches/sslkeylogerror.patch
+
 Apply the patches to NSS by running the patches/applypatches.sh script.  Read
 the comments at the top of patches/applypatches.sh for instructions.