Remove default key slot from KeygenHandler.

content/shell/browser/shell_browser_context.cc

Index: content/shell/browser/shell_browser_context.cc
diff --git a/content/shell/browser/shell_browser_context.cc b/content/shell/browser/shell_browser_context.cc
index d953dbe0065734d5a973409e77f6db141f4cb2ab..92801658384abeca855138cd4fcf4d96f1006b81 100644
--- a/content/shell/browser/shell_browser_context.cc
+++ b/content/shell/browser/shell_browser_context.cc
@@ -18,6 +18,7 @@
 #include "content/shell/browser/shell_download_manager_delegate.h"
 #include "content/shell/browser/shell_url_request_context_getter.h"
 #include "content/shell/common/shell_switches.h"
+#include "net/base/keygen_handler.h"
 
 #if defined(OS_WIN)
 #include "base/base_paths_win.h"
@@ -77,6 +78,15 @@ ShellBrowserContext::~ShellBrowserContext() {
   }
 }
 
+void ShellBrowserContext::CreateKeygenHandler(
+    uint32 key_size_in_bits,
+    const std::string& challenge_string,
+    const GURL& url,
+    const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback) {
+  scoped_ptr<net::KeygenHandler> handler(
+      new net::KeygenHandler(key_size_in_bits, challenge_string, url));
+}
+
 void ShellBrowserContext::InitWhileIOAllowed() {
   CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   if (cmd_line->HasSwitch(switches::kIgnoreCertificateErrors) ||