Initialize SSL in unittest_main.cc.

Instead of having each test individually initialize and tear down SSL
move this to unittest_main.cc so that all tests are properly
initialized and new tests "don't have to think about it".

R=pthatcher@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/30549004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7316 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/media/sctp/sctpdataengine_unittest.cc

@@ -229,11 +229,6 @@ class SctpDataMediaChannelTest : public testing::Test,
     LOG(LS_WARNING) << "Unabled to initialize NSS.";
   }
 #endif  // HAVE_NSS_SSL_H
-    rtc::InitializeSSL();
-  }
-
-  static void TearDownTestCase() {
-    rtc::CleanupSSL();
   }
 
   virtual void SetUp() {