[Autofill] Add UMA timing metrics for requestAutocomplete dialog.

chrome/browser/autofill/autocheckout_manager.cc

 // Copyright (c) 2013 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/autocheckout_manager.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "chrome/browser/autofill/autofill_manager.h"
 #include "chrome/common/form_data.h"
@@ skipping 36 matching lines @@
   formdata.fields.push_back(BuildField("shipping street-address"));
   formdata.fields.push_back(BuildField("shipping locality"));
   formdata.fields.push_back(BuildField("shipping region"));
   formdata.fields.push_back(BuildField("shipping country"));
   formdata.fields.push_back(BuildField("shipping postal-code"));
   return formdata;
 }
 
 }  // namespace
 
+namespace autofill {
+
 AutocheckoutManager::AutocheckoutManager(AutofillManager* autofill_manager)
     : autofill_manager_(autofill_manager),
       ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)) {
 }
 
 AutocheckoutManager::~AutocheckoutManager() {
 }
 
 void AutocheckoutManager::ShowAutocheckoutDialog(
     const GURL& frame_url,
     const SSLStatus& ssl_status) {
   base::Callback<void(const FormStructure*)> callback =
       base::Bind(&AutocheckoutManager::ReturnAutocheckoutData,
                  weak_ptr_factory_.GetWeakPtr());
   autofill_manager_->ShowRequestAutocompleteDialog(
-      BuildAutocheckoutFormData(), frame_url, ssl_status, callback);
+      BuildAutocheckoutFormData(), frame_url, ssl_status,
+      DIALOG_REQUESTER_AUTOCHECKOUT, callback);
 }
 
 void AutocheckoutManager::ReturnAutocheckoutData(const FormStructure* result) {
   // TODO(ramankk): Parse the response FormStructure.
   autofill_manager_->RequestAutocompleteDialogClosed();
 }
+
+}  // namespace autofill