Remove default key slot from KeygenHandler.

content/public/test/mock_resource_context.cc

Index: content/public/test/mock_resource_context.cc
diff --git a/content/public/test/mock_resource_context.cc b/content/public/test/mock_resource_context.cc
index 342766c5f4faeae1e853d0df780b5e4726a6cac7..5dffb148aba05c0913bff02c457eb0cff4b2b436 100644
--- a/content/public/test/mock_resource_context.cc
+++ b/content/public/test/mock_resource_context.cc
@@ -4,6 +4,7 @@
 
 #include "content/public/test/mock_resource_context.h"
 
+#include "base/logging.h"
 #include "net/url_request/url_request_context.h"
 
 namespace content {
@@ -25,6 +26,14 @@ net::HostResolver* MockResourceContext::GetHostResolver()  {
   return NULL;
 }
 
+void MockResourceContext::CreateKeygenHandler(
+    uint32 key_size_in_bits,
+    const std::string& challenge_string,
+    const GURL& url,
+    const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback) {
+  NOTREACHED();
+}
+
 net::URLRequestContext* MockResourceContext::GetRequestContext()  {
   CHECK(test_request_context_);
   return test_request_context_;