Enable ExtensionApiTest.Toolstrip and add additional debug output

net/url_request/url_request_job_manager.cc

Index: net/url_request/url_request_job_manager.cc
diff --git a/net/url_request/url_request_job_manager.cc b/net/url_request/url_request_job_manager.cc
index 617a938819ff65e31732c2e18c3d402f105f54b6..616ce3043c5babfc8d280eebd86c4edf81e0486e 100644
--- a/net/url_request/url_request_job_manager.cc
+++ b/net/url_request/url_request_job_manager.cc
@@ -99,6 +99,7 @@ URLRequestJob* URLRequestJobManager::CreateJob(URLRequest* request) const {
   // If we reached here, then it means that a registered protocol factory
   // wasn't interested in handling the URL.  That is fairly unexpected, and we
   // don't know have a specific error to report here :-(
+  LOG(WARNING) << "Failed to map: " << request->url().spec();
   return new URLRequestErrorJob(request, net::ERR_FAILED);
 }