Fix the flaky KioskAppManageTest::RemoveApp and UpdateAndRemove tests flaky issue caused by file de…

chrome/browser/chromeos/app_mode/kiosk_app_manager_browsertest.cc

 // Copyright 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/chromeos/app_mode/kiosk_app_manager.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 533 matching lines @@
   manager()->GetApps(&apps);
   ASSERT_EQ(1u, apps.size());
   base::FilePath crx_path;
   std::string version;
   EXPECT_TRUE(GetCachedCrx(kTestLocalFsKioskApp, &crx_path, &version));
   EXPECT_TRUE(base::PathExists(crx_path));
   EXPECT_EQ("1.0.0", version);
 
   // Remove the app now.
   manager()->RemoveApp(kTestLocalFsKioskApp);
-  content::RunAllPendingInMessageLoop(BrowserThread::FILE);
+  content::BrowserThread::GetBlockingPool()->FlushForTesting();
   manager()->GetApps(&apps);
   ASSERT_EQ(0u, apps.size());
   EXPECT_FALSE(base::PathExists(crx_path));
   EXPECT_FALSE(GetCachedCrx(kTestLocalFsKioskApp, &crx_path, &version));
 }
 
 IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, UpdateApp) {
   // Add a version 1 app first.
   RunAddNewAppTest(kTestLocalFsKioskApp, "1.0.0", kTestLocalFsKioskAppName);
   KioskAppManager::Apps apps;
@@ skipping 61 matching lines @@
   base::FilePath v2_crx_path;
   std::string new_version;
   EXPECT_TRUE(GetCachedCrx(kTestLocalFsKioskApp, &v2_crx_path, &new_version));
   EXPECT_EQ("2.0.0", new_version);
   // Verify both v1 and v2 crx files exist.
   EXPECT_TRUE(base::PathExists(v1_crx_path));
   EXPECT_TRUE(base::PathExists(v2_crx_path));
 
   // Remove the app now.
   manager()->RemoveApp(kTestLocalFsKioskApp);
-  content::RunAllPendingInMessageLoop(BrowserThread::FILE);
+  content::BrowserThread::GetBlockingPool()->FlushForTesting();
   manager()->GetApps(&apps);
   ASSERT_EQ(0u, apps.size());
   // Verify both v1 and v2 crx files are removed.
   EXPECT_FALSE(base::PathExists(v1_crx_path));
   EXPECT_FALSE(base::PathExists(v2_crx_path));
   EXPECT_FALSE(GetCachedCrx(kTestLocalFsKioskApp, &v2_crx_path, &version));
 }
 
 IN_PROC_BROWSER_TEST_F(KioskAppManagerTest, EnableConsumerKiosk) {
   scoped_ptr<KioskAppManager::ConsumerKioskAutoLaunchStatus> status(
@@ skipping 66 matching lines @@
   manager()->GetConsumerKioskAutoLaunchStatus(
       base::Bind(&ConsumerKioskAutoLaunchStatusCheck,
                  status.get(),
                  runner3->QuitClosure()));
   runner3->Run();
   EXPECT_EQ(*status.get(),
             KioskAppManager::CONSUMER_KIOSK_AUTO_LAUNCH_DISABLED);
 }
 
 }  // namespace chromeos