Support generation of EC keys using P256 curve and support ECDSA certs.

webrtc/base/sslidentity_unittest.cc

Index: webrtc/base/sslidentity_unittest.cc
diff --git a/webrtc/base/sslidentity_unittest.cc b/webrtc/base/sslidentity_unittest.cc
index fd754114288c1cd7a9b97bc429973df42a5ec474..5a5f32a344fec736e9299105aff115fdce7279ec 100644
--- a/webrtc/base/sslidentity_unittest.cc
+++ b/webrtc/base/sslidentity_unittest.cc
@@ -46,8 +46,10 @@ class SSLIdentityTest : public testing::Test {
   }
 
   virtual void SetUp() {
-    identity1_.reset(SSLIdentity::Generate("test1"));
-    identity2_.reset(SSLIdentity::Generate("test2"));
+    // Confirmed to work with KT_RSA and KT_ECDSA.

[juberti1, 2015/06/26 19:16:01]

This needs to specifically test both KT_RSA and KT_ECDSA behavior - using
KT_DEFAULT isn't correct in this particular test.

[torbjorng (webrtc), 2015/07/02 12:35:08]

OK.  I have fixed this and cleaned things up to avoid making the
code unreadable.

Added a hardwired EC key/cert in PEM format too.  Unfortunately, I
couldn't find any NSS function for reading it (see added code comments),
so this is used only for BoringSSL.

+    identity1_.reset(SSLIdentity::Generate("test1", rtc::KT_DEFAULT));
+    // Confirmed to work with KT_RSA and KT_ECDSA.
+    identity2_.reset(SSLIdentity::Generate("test2", rtc::KT_DEFAULT));
 
     ASSERT_TRUE(identity1_);
     ASSERT_TRUE(identity2_);