content::RTCCertificateGenerator and WebRTC-EnableWebRtcEcdsa update.

content/renderer/media/rtc_certificate_generator.h

Index: content/renderer/media/rtc_certificate_generator.h
diff --git a/content/renderer/media/rtc_certificate_generator.h b/content/renderer/media/rtc_certificate_generator.h
index 3858db265cc947ca2fce961a908d64d4988702d8..e3075030b374f9339cd4d2f1deeb8812aa3d4f7d 100644
--- a/content/renderer/media/rtc_certificate_generator.h
+++ b/content/renderer/media/rtc_certificate_generator.h
@@ -6,10 +6,12 @@
 #define CONTENT_RENDERER_MEDIA_RTC_CERTIFICATE_GENERATOR_H_
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebRTCCertificate.h"
 #include "third_party/WebKit/public/platform/WebRTCCertificateGenerator.h"
 #include "third_party/WebKit/public/platform/WebRTCKeyParams.h"
 #include "third_party/webrtc/base/optional.h"
+#include "third_party/webrtc/base/rtccertificate.h"
 
 namespace content {
 
@@ -38,6 +40,10 @@ class RTCCertificateGenerator : public blink::WebRTCCertificateGenerator {
       const std::string& pem_private_key,
       const std::string& pem_certificate) override;
 
+  static scoped_refptr<rtc::RTCCertificate> generateCertificateAndWait(
+      const rtc::KeyParams& key_params,
+      const rtc::Optional<uint64_t>& expires_ms);
+
  private:
   void generateCertificateWithOptionalExpiration(
       const blink::WebRTCKeyParams& key_params,