Update NSS to NSS 3.16 RTM

dart/runtime/bin/net/README-updating

Index: dart/runtime/bin/net/README-updating
===================================================================
--- dart/runtime/bin/net/README-updating	(revision 0)
+++ dart/runtime/bin/net/README-updating	(revision 0)
@@ -0,0 +1,34 @@
+# Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+
+The standalone Dart executable uses the NSS library from Mozilla to
+support secure networking connections (SSL and TLS).  It uses a copy
+of the library from the Chromium repository, that includes patches
+added by Chromium.  We pin this to a fixed revision, using the
+nss_revision variable in all the DEPS files in the deps directory of
+the Dart repository.
+
+This revision should be updated when new security fixes are added to
+NSS, or every few months.  The .gyp files in this directory are copies
+of the .gyp files in the Chromium copy of NSS, with changes made to
+account for the configurations and directory structure of the Dart
+repository.  Differences between the Chromium versions and the Dart
+versions should be annotated with "# Added by Dart'.
+
+All the files should have a comment saying where the original file is
+in the Chromium repository. To update these files, look at the diff
+between the two revisions in Chromium, and apply the changes manually,
+with any needed modifications, to the Dart copies.  Our aim is to keep
+the difference between the Chromium and Dart copies as small as
+possible.
+
+The nss_memio.cc and nss_memio.h files are also taken from Chromium,
+and should be updated at the same time.  The os_Linux.s file is new,
+and should not need changing.
+
+The file nss.gyp includes support for disabling compilation of NSS
+using the variable dart_io_support, when building configurations that
+don't use it.  NSS compilation is disabled when building Dartium,
+because Chromium includes its own copy, and the build process would
+get confused.

[Søren Gjesse, 2014/03/20 14:24:48]

Thanks for writing this!