Add a metrics extensions API....

chrome/browser/extensions/extension_apitest.cc

 // Copyright (c) 2009 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/extensions/extension_apitest.h"
 
 #include "chrome/browser/browser.h"
 #include "chrome/browser/extensions/extensions_service.h"
 #include "chrome/browser/profile.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/notification_registrar.h"
 #include "chrome/test/ui_test_utils.h"
 
 namespace {
 static const int kTimeoutMs = 60 * 1000;  // 1 minute
 };
 
 ExtensionApiTest::ResultCatcher::ResultCatcher() {
   registrar_.Add(this, NotificationType::EXTENSION_TEST_PASSED,
                  NotificationService::AllSources());
@@ skipping 76 matching lines @@
   if (!extension) {
     message_ = "extension pointer is NULL.";
     return NULL;
   }
   return extension;
 }
 
 void ExtensionApiTest::SetUpCommandLine(CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
+
+  // Needed for metrics extension API tests.
+  command_line->AppendSwitch(switches::kEnableMetricsExtensionApi);
 }