Ability to persist RTCCertificate in IndexedDB (enables cloning).

third_party/WebKit/public/platform/WebRTCCertificateGenerator.h

Index: third_party/WebKit/public/platform/WebRTCCertificateGenerator.h
diff --git a/third_party/WebKit/public/platform/WebRTCCertificateGenerator.h b/third_party/WebKit/public/platform/WebRTCCertificateGenerator.h
index 2f35700e7847ac14683328779117b4fea250dd6e..0e06f17b85bc2e5f87e93f0f765ff9915114b28f 100644
--- a/third_party/WebKit/public/platform/WebRTCCertificateGenerator.h
+++ b/third_party/WebKit/public/platform/WebRTCCertificateGenerator.h
@@ -65,6 +65,11 @@ public:
     // For example, if the number of bits of some parameter is too small or too large we
     // may want to reject it for security or performance reasons.
     virtual bool isSupportedKeyParams(const WebRTCKeyParams&) = 0;
+
+    // Creates a certificate from the PEM strings. See also |WebRTCCertificate::toPEM|.
+    virtual std::unique_ptr<WebRTCCertificate> fromPEM(
+        const std::string& pemPrivateKey,
+        const std::string& pemCertificate) = 0;
 };
 
 } // namespace blink