Adding <keygen> Content Setting (Final)

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index 44114fd7e9e221e1c10995b3e4b254e3631313c1..cec7b8b1225fbbe99c24a5849041c8e0f26856cc 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -531,6 +531,7 @@ void RenderMessageFilter::OnCacheableMetadataAvailable(
 void RenderMessageFilter::OnKeygen(uint32_t key_size_index,
                                    const std::string& challenge_string,
                                    const GURL& url,
+                                   const GURL& top_origin,
                                    IPC::Message* reply_msg) {
   if (!resource_context_)
     return;
@@ -552,6 +553,13 @@ void RenderMessageFilter::OnKeygen(uint32_t key_size_index,
       return;
   }
 
+  if (!GetContentClient()->browser()->AllowKeygen(top_origin,
+                                                  resource_context_)) {
+    RenderProcessHostMsg_Keygen::WriteReplyParams(reply_msg, std::string());
+    Send(reply_msg);
+    return;
+  }
+
   resource_context_->CreateKeygenHandler(
       key_size_in_bits,
       challenge_string,