Enable SCTP compile for iOS.

Chromium's been updated to pull a version of usrsctplib that will compile correctly. This update DEPS to point at new revision and turn on the compile time flags for iOS sctp.

BUG=3211
R=wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/13929004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6681 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/build/common.gypi

@@ -67,6 +67,7 @@
       'FEATURE_ENABLE_PSTN',
       # TODO(eric): enable HAVE_NSS_SSL_H and SSL_USE_NSS once they are ready.
       # 'HAVE_NSS_SSL_H=1',
+      'HAVE_SCTP',
       'HAVE_SRTP',
       'HAVE_WEBRTC_VIDEO',
       'HAVE_WEBRTC_VOICE',
@@ -107,10 +108,6 @@
         'defines': [
           'IOS',
         ],
-      }, {
-        'defines': [
-          'HAVE_SCTP',
-        ],
       }],
       ['OS=="ios" or (OS=="mac" and target_arch!="ia32")', {
         'defines': [

talk/libjingle.gyp

@@ -1021,13 +1021,6 @@
             # libjpeg which pulls in libyuv which currently disabled.
             '../third_party/libyuv/include',
           ],
-          'dependencies!': [
-            '<(DEPTH)/third_party/usrsctp/usrsctp.gyp:usrsctplib',
-          ],
-          'sources!': [
-            'media/sctp/sctpdataengine.cc',
-            'media/sctp/sctpdataengine.h',
-          ],
         }],
         ['OS=="android"', {
           'sources': [