WebRtcBrowserTest tests with RSA and ECDSA certificates.

chrome/browser/media/webrtc_browsertest_base.h

Index: chrome/browser/media/webrtc_browsertest_base.h
diff --git a/chrome/browser/media/webrtc_browsertest_base.h b/chrome/browser/media/webrtc_browsertest_base.h
index 1bb5d10f2180087b0af9aec59b9b40015464f1ba..b8a868a70973a27e7f91ebcaeaa62ace85842f13 100644
--- a/chrome/browser/media/webrtc_browsertest_base.h
+++ b/chrome/browser/media/webrtc_browsertest_base.h
@@ -95,10 +95,18 @@ class WebRtcTestBase : public InProcessBrowserTest {
 
   // Sets up a peer connection in the tab and adds the current local stream
   // (which you can prepare by calling one of the GetUserMedia* methods above).
-  void SetupPeerconnectionWithLocalStream(content::WebContents* tab) const;
+  // Optionally, |certificate_keygen_algorithm| is JavaScript for an
+  // |AlgorithmIdentifier| to be used as parameter to
+  // |RTCPeerConnection.generateCertificate|. The resulting certificate will be
+  // used by the peer connection, otherwise a default certificate is used.
+  void SetupPeerconnectionWithLocalStream(
+      content::WebContents* tab,
+      std::string certificate_keygen_algorithm = "") const;

[phoglund_chromium, 2016/04/26 11:54:20]

I was sure default arguments were banned, but they appear to have been unbanned.
Alright, sure, let's go with this.

[hbos_chromium, 2016/04/27 11:19:03]

Acknowledged.

 
   // Same as above but does not add the local stream.
-  void SetupPeerconnectionWithoutLocalStream(content::WebContents* tab) const;
+  void SetupPeerconnectionWithoutLocalStream(
+      content::WebContents* tab,
+      std::string certificate_keygen_algorithm = "") const;
 
   // Exchanges offers and answers between the peer connections in the
   // respective tabs. Before calling this, you must have prepared peer