RTCPeerConnection.generateCertificate: Optionally specify expiration.

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 95734fddf162dc342abaaa49444b6fb4b133737a..b582af9ea1a1d333b1596acfe07f1dfd486d94b8 100644
--- a/content/renderer/media/rtc_certificate_generator.h
+++ b/content/renderer/media/rtc_certificate_generator.h
@@ -9,6 +9,7 @@
 #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"
 
 namespace content {
 
@@ -26,9 +27,22 @@ class RTCCertificateGenerator : public blink::WebRTCCertificateGenerator {
       const blink::WebURL& url,
       const blink::WebURL& first_party_for_cookies,
       std::unique_ptr<blink::WebRTCCertificateCallback> observer) override;
+  void generateCertificateWithExpiration(
+      const blink::WebRTCKeyParams& key_params,
+      const blink::WebURL& url,
+      const blink::WebURL& first_party_for_cookies,
+      uint64_t expires_ms,
+      std::unique_ptr<blink::WebRTCCertificateCallback> observer) override;
   bool isSupportedKeyParams(const blink::WebRTCKeyParams& key_params) override;
 
  private:
+  void generateCertificateWithOptionalExpiration(
+      const blink::WebRTCKeyParams& key_params,
+      const blink::WebURL& url,
+      const blink::WebURL& first_party_for_cookies,
+      const rtc::Optional<uint64_t>& expires_ms,
+      std::unique_ptr<blink::WebRTCCertificateCallback> observer);
+
   DISALLOW_COPY_AND_ASSIGN(RTCCertificateGenerator);
 };