Remove call to IsRunningSequenceOnCurrentThread() in media_file_system_backend.cc

chrome/browser/media_galleries/fileapi/itunes_data_provider_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/media_galleries/fileapi/itunes_data_provider.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <string>
@@ skipping 131 matching lines @@
   // are returned the xml file is not created.
   virtual std::vector<LibraryEntry> SetUpLibrary() {
     return std::vector<LibraryEntry>();
   }
 
   // Start the test. The data provider is refreshed before calling StartTest
   // and the result of the refresh is passed in.
   virtual void StartTest(bool parse_success) = 0;
 
   void TestDone() {
-    DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
+    MediaFileSystemBackend::AssertCurrentlyOnMediaSequence();
     ImportedMediaGalleryRegistry* imported_registry =
         ImportedMediaGalleryRegistry::GetInstance();
     imported_registry->itunes_data_provider_.reset();
     content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
                                      quit_closure_);
   }
 
  private:
   void StartTestOnMediaTaskRunner() {
-    DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
+    MediaFileSystemBackend::AssertCurrentlyOnMediaSequence();
     ImportedMediaGalleryRegistry* imported_registry =
         ImportedMediaGalleryRegistry::GetInstance();
     imported_registry->itunes_data_provider_.reset(
         new TestITunesDataProvider(
             XmlFile(),
             base::Bind(&ITunesDataProviderTest::OnLibraryChanged,
                        base::Unretained(this))));
     data_provider()->RefreshData(base::Bind(&ITunesDataProviderTest::StartTest,
                                             base::Unretained(this)));
   }
 
   void OnLibraryChanged() {
-    DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
+    MediaFileSystemBackend::AssertCurrentlyOnMediaSequence();
     if (!library_changed_callback_.is_null()) {
       library_changed_callback_.Run();
       library_changed_callback_.Reset();
     }
   }
 
   void WriteLibraryInternal(const std::vector<LibraryEntry>& entries) {
     if (entries.empty())
       return;
     std::string xml = "<plist><dict><key>Tracks</key><dict>\n";
@@ skipping 276 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(ITunesDataProviderUniqueNameTest, UniqueNameTest) {
   RunTest();
 }
 
 IN_PROC_BROWSER_TEST_F(ITunesDataProviderEscapeTest, EscapeTest) {
   RunTest();
 }
 
 }  // namespace itunes