Make sure sideload wipeout doesn't interfere with the tests.

chrome/browser/extensions/extension_browsertest.cc

 // Copyright (c) 2012 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_browsertest.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/file_path.h"
@@ skipping 25 matching lines @@
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/test/browser_test_utils.h"
 #include "sync/api/string_ordinal.h"
 
 using extensions::Extension;
 using extensions::ExtensionCreator;
+using extensions::FeatureSwitch;
 
 ExtensionBrowserTest::ExtensionBrowserTest()
     : loaded_(false),
       installed_(false),
       extension_installs_observed_(0),
       extension_load_errors_observed_(0),
       target_page_action_count_(-1),
       target_visible_page_action_count_(-1),
       current_channel_(chrome::VersionInfo::CHANNEL_DEV),
       override_prompt_for_external_extensions_(
-          extensions::FeatureSwitch::prompt_for_external_extensions(), false) {
+          FeatureSwitch::prompt_for_external_extensions(), false),
+       override_sideload_wipeout_(
+          FeatureSwitch::sideload_wipeout(), false) {
   EXPECT_TRUE(temp_dir_.CreateUniqueTempDir());
 }
 
 ExtensionBrowserTest::~ExtensionBrowserTest() {}
 
 void ExtensionBrowserTest::SetUpCommandLine(CommandLine* command_line) {
   PathService::Get(chrome::DIR_TEST_DATA, &test_data_dir_);
   test_data_dir_ = test_data_dir_.AppendASCII("extensions");
 
 #if defined(OS_CHROMEOS)
@@ skipping 610 matching lines @@
     case content::NOTIFICATION_LOAD_STOP:
       VLOG(1) << "Got LOAD_STOP notification.";
       MessageLoopForUI::current()->Quit();
       break;
 
     default:
       NOTREACHED();
       break;
   }
 }