Move kEnableExperimentalExtensionApis switch to extensions/common/switches.cc.

chrome/browser/extensions/api/usb/usb_manual_apitest.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/extensions/api/permissions/permissions_api.h"
 #include "chrome/browser/extensions/extension_apitest.h"
-#include "chrome/common/chrome_switches.h"
 
 namespace {
 
 class UsbManualApiTest : public ExtensionApiTest {
- public:
-  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
-    ExtensionApiTest::SetUpCommandLine(command_line);
-    command_line->AppendSwitch(switches::kEnableExperimentalExtensionApis);
-  }
 };
 
 }  // namespace
 
 IN_PROC_BROWSER_TEST_F(UsbManualApiTest, MANUAL_ListInterfaces) {
   extensions::PermissionsRequestFunction::SetIgnoreUserGestureForTests(true);
   extensions::PermissionsRequestFunction::SetAutoConfirmForTests(true);
   ASSERT_TRUE(RunExtensionTest("usb_manual/list_interfaces"));
 }