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..a54761a84c24dfd72b3194f76dcbdd30c8bb3aba 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"
@@ -35,6 +36,15 @@ class ShellBrowserContext::ShellResourceContext : public ResourceContext {
   virtual ~ShellResourceContext() {}
 
   // ResourceContext implementation:
+  virtual void CreateKeygenHandler(
+      uint32 key_size_in_bits,
+      const std::string& challenge_string,
+      const GURL& url,
+      const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback)
+      OVERRIDE {
+    scoped_ptr<net::KeygenHandler> handler(
+        new net::KeygenHandler(key_size_in_bits, challenge_string, url));
+  }
   virtual net::HostResolver* GetHostResolver() OVERRIDE {
     CHECK(getter_);
     return getter_->host_resolver();