Simplify threading in browser thread by making only ChromeThread deal with di...

chrome/browser/renderer_host/file_system_accessor_unittest.cc

 // Copyright (c) 2006-2009 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 "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/timer.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/renderer_host/file_system_accessor.h"
 #include "chrome/test/file_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 class FileSystemAccessorTest : public testing::Test {
  protected:
   virtual void SetUp() {
     // Make sure the current thread has a message loop.
     EXPECT_TRUE(MessageLoop::current() != NULL);
 
     // Create FILE thread which is used to do file access.
     file_thread_.reset(new ChromeThread(ChromeThread::FILE));
-    EXPECT_TRUE(ChromeThread::GetMessageLoop(ChromeThread::FILE) == NULL);
 
     // Start FILE thread and verify FILE message loop exists.
     file_thread_->Start();
     EXPECT_TRUE(file_thread_->message_loop() != NULL);
   }
 
   virtual void TearDown() {
     file_thread_->Stop();
-    EXPECT_TRUE(ChromeThread::GetMessageLoop(ChromeThread::FILE) == NULL);
   }
 
   void TestGetFileSize(const FilePath& path,
                        void* param,
                        int64 expected_result,
                        void* expected_param) {
     // Initialize the actual result not equal to the expected result.
     result_ = expected_result + 1;
     param_ = NULL;
 
@@ skipping 67 matching lines @@
 }
 
 TEST_F(FileSystemAccessorTest, GetFileSizeNotFound) {
   FilePath path;
   EXPECT_TRUE(file_util::CreateNewTempDirectory(
       FILE_PATH_LITERAL("chrome_test_"), &path));
   FileAutoDeleter deleter(path);
 
   TestGetFileSize(path.Append(FILE_PATH_LITERAL("foo.txt")), NULL, -1, NULL);
 }