RTCCertificate and RTCPeerConnection.generateCertificate added to JavaScript

public/platform/Platform.h

Index: public/platform/Platform.h
diff --git a/public/platform/Platform.h b/public/platform/Platform.h
index 7d6cb901398636564bbfc20e0ec56b37761aafc2..237630243c3bd18048a9c0ca08f3b904ecea135f 100644
--- a/public/platform/Platform.h
+++ b/public/platform/Platform.h
@@ -96,6 +96,7 @@ class WebPrescientNetworking;
 class WebProcessMemoryDump;
 class WebPublicSuffixList;
 class WebPushProvider;
+class WebRTCCertificateGenerator;
 class WebRTCPeerConnectionHandler;
 class WebRTCPeerConnectionHandlerClient;
 class WebSandboxSupport;
@@ -633,6 +634,9 @@ public:
     virtual WebMediaRecorderHandler* createMediaRecorderHandler() { return nullptr; }
 
     // May return null if WebRTC functionality is not avaliable or out of resources.
+    virtual WebRTCCertificateGenerator* createRTCCertificateGenerator() { return nullptr; }
+
+    // May return null if WebRTC functionality is not avaliable or out of resources.
     virtual WebMediaStreamCenter* createMediaStreamCenter(WebMediaStreamCenterClient*) { return nullptr; }
 
     // WebWorker ----------------------------------------------------------