Add some basic success/failure UMA logging for autofill.

chrome/browser/autofill/autofill_download.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autofill/autofill_download.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 49 matching lines @@
     AutoFillDownloadManager::Observer *observer) {
   if (observer) {
     DCHECK(!observer_);
     observer_ = observer;
   } else {
     observer_ = NULL;
   }
 }
 
 bool AutoFillDownloadManager::StartQueryRequest(
-    const ScopedVector<FormStructure>& forms) {
+    const ScopedVector<FormStructure>& forms,
+    autofill_metrics::LogServerQueryMetricFn log_server_query_metric) {
   if (next_query_request_ > base::Time::Now()) {
     // We are in back-off mode: do not do the request.
     return false;
   }
   std::string form_xml;
   FormRequestData request_data;
   if (!FormStructure::EncodeQueryRequest(forms, &request_data.form_signatures,
                                          &form_xml))
     return false;
 
   request_data.request_type = AutoFillDownloadManager::REQUEST_QUERY;
-  autofill_metrics::LogServerQueryMetric(autofill_metrics::QUERY_SENT);
+  log_server_query_metric(autofill_metrics::QUERY_SENT);
 
   return StartRequest(form_xml, request_data);
 }
 
 bool AutoFillDownloadManager::StartUploadRequest(
     const FormStructure& form, bool form_was_matched) {
   if (next_upload_request_ > base::Time::Now()) {
     // We are in back-off mode: do not do the request.
     return false;
   }
@@ skipping 169 matching lines @@
         SetNegativeUploadRate(new_negative_upload_rate);
       }
 
       if (observer_)
         observer_->OnUploadedAutoFillHeuristics(it->second.form_signatures[0]);
     }
   }
   delete it->first;
   url_fetchers_.erase(it);
 }