Update API for Objective-C RTCPeerConnectionFactory.

BUG=
R=jiayl@webrtc.org, tkchin@webrtc.org

Review URL: https://codereview.webrtc.org/1558473002 .

Patch from Jon Hjelle <hjon@andyet.net>.

Cr-Commit-Position: refs/heads/master@{#11326}
diff --git a/webrtc/base/BUILD.gn b/webrtc/base/BUILD.gn
index 0f7a3f2..fa8ddff 100644
--- a/webrtc/base/BUILD.gn
+++ b/webrtc/base/BUILD.gn
@@ -635,6 +635,8 @@
       "objc/RTCDispatcher.m",
       "objc/RTCLogging.h",
       "objc/RTCLogging.mm",
+      "objc/RTCSSLAdapter.h",
+      "objc/RTCSSLAdapter.mm",
     ]
   }
 }
diff --git a/webrtc/base/base.gyp b/webrtc/base/base.gyp
index 3d2ef62..f862eae 100644
--- a/webrtc/base/base.gyp
+++ b/webrtc/base/base.gyp
@@ -39,6 +39,8 @@
             'objc/RTCDispatcher.m',
             'objc/RTCLogging.h',
             'objc/RTCLogging.mm',
+            'objc/RTCSSLAdapter.h',
+            'objc/RTCSSLAdapter.mm',
           ],
           'conditions': [
             ['OS=="ios"', {
diff --git a/webrtc/base/objc/RTCSSLAdapter.h b/webrtc/base/objc/RTCSSLAdapter.h
new file mode 100644
index 0000000..11ac8af
--- /dev/null
+++ b/webrtc/base/objc/RTCSSLAdapter.h
@@ -0,0 +1,18 @@
+/*
+ *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#import <Foundation/Foundation.h>
+
+/**
+ * Initialize and clean up the SSL library. Failure is fatal. These call the
+ * corresponding functions in webrtc/base/ssladapter.h.
+ */
+BOOL RTCInitializeSSL();
+BOOL RTCCleanupSSL();
diff --git a/webrtc/base/objc/RTCSSLAdapter.mm b/webrtc/base/objc/RTCSSLAdapter.mm
new file mode 100644
index 0000000..c881a44
--- /dev/null
+++ b/webrtc/base/objc/RTCSSLAdapter.mm
@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2016 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#import "RTCSSLAdapter.h"
+
+#include "webrtc/base/checks.h"
+#include "webrtc/base/ssladapter.h"
+
+BOOL RTCInitializeSSL() {
+  BOOL initialized = rtc::InitializeSSL();
+  RTC_DCHECK(initialized);
+  return initialized;
+}
+
+BOOL RTCCleanupSSL() {
+  BOOL cleanedUp = rtc::CleanupSSL();
+  RTC_DCHECK(cleanedUp);
+  return cleanedUp;
+}