Update libsrtp to upstream 1.5.0

README.chromium

Index: README.chromium
diff --git a/README.chromium b/README.chromium
index 32b832ebffe3cb63e2e5132af07443df84e013ac..0f123a9960f869cf2deadc626ccc672da31b4431 100644
--- a/README.chromium
+++ b/README.chromium
@@ -1,6 +1,6 @@
 Name: libsrtp
-URL: http://srtp.sourceforge.net/srtp.html
-Version: 1.4.4
+URL: https://github.com/cisco/libsrtp
+Version: 1.5.0
 License: 3-clause BSD
 License File: srtp/LICENSE
 Security Critical: Yes
@@ -19,6 +19,9 @@ Replace 'inline' with 'INLINE' and #define to either 'inline' or '__inline'.
 This is required because VS2012 does not allow redefinition of keywords via
 macros, but also does not support 'inline' in C files.
 
-Adding additional RTP header check

[juberti2, 2015/02/18 23:42:55]

Did you mean to remove this? I think this is fine to retain (since it only
touches one file), although we should try to upstream it.

-
 Added gyp support to __arm64__
+
+Use '_byteswap_*' functions to convert between host and network byte order on
+Windows.
+
+AES-192 is disabled when compiled against BoringSSL.