Remove default key slot from KeygenHandler.

android_webview/browser/aw_resource_context.cc

Index: android_webview/browser/aw_resource_context.cc
diff --git a/android_webview/browser/aw_resource_context.cc b/android_webview/browser/aw_resource_context.cc
index dc0a1598a99ff31ae5b661dee5aa8cfb64b12fb9..605abd1590f8504b1a1e224aa0a8399acb0e2423 100644
--- a/android_webview/browser/aw_resource_context.cc
+++ b/android_webview/browser/aw_resource_context.cc
@@ -4,7 +4,9 @@
 
 #include "android_webview/browser/aw_resource_context.h"
 
+#include "base/logging.h"
 #include "content/public/browser/browser_thread.h"
+#include "net/base/keygen_handler.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
@@ -48,6 +50,16 @@ net::URLRequestContext* AwResourceContext::GetRequestContext() {
   return getter_->GetURLRequestContext();
 }
 
+void AwResourceContext::CreateKeygenHandler(
+    uint32 key_size_in_bits,
+    const std::string& challenge_string,
+    const GURL& url,
+    const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback) {
+  DCHECK(!callback.is_null());
+  callback.Run(make_scoped_ptr(
+      new net::KeygenHandler(key_size_in_bits, challenge_string, url)));
+}
+
 bool AwResourceContext::AllowMicAccess(const GURL& origin) {
   return false;
 }