file_manager: Stop mentioning about 'gdata' from file_manager code

chrome/browser/chromeos/extensions/file_manager/external_filesystem_apitest.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 "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
@@ skipping 272 matching lines @@
 };
 
 // Tests for a drive file system.
 class DriveFileSystemExtensionApiTest : public FileSystemExtensionApiTestBase {
  public:
   DriveFileSystemExtensionApiTest() : fake_drive_service_(NULL) {}
   virtual ~DriveFileSystemExtensionApiTest() {}
 
   // FileSystemExtensionApiTestBase OVERRIDE.
   virtual void InitTestFileSystem() OVERRIDE {
-    // Set up cache root and documents service to be used when creating gdata
-    // system service. This has to be done early on (before the browser is
-    // created) because the system service instance is initialized very early
-    // by FileManagerEventRouter.
+    // Set up cache root to be used by DriveIntegrationService. This has to be
+    // done before the browser is created because the service instance is
+    // initialized by FileManagerEventRouter.
     ASSERT_TRUE(test_cache_root_.CreateUniqueTempDir());
 
     drive::DriveIntegrationServiceFactory::SetFactoryForTest(
         base::Bind(
             &DriveFileSystemExtensionApiTest::CreateDriveIntegrationService,
             base::Unretained(this)));
   }
 
   // FileSystemExtensionApiTestBase OVERRIDE.
   virtual void AddTestMountPoint() OVERRIDE {
@@ skipping 118 matching lines @@
 IN_PROC_BROWSER_TEST_F(DriveFileSystemExtensionApiTest, AppFileHandler) {
   fake_drive_service_->set_default_max_results(1);
   EXPECT_TRUE(RunFileSystemExtensionApiTest(
       "file_browser/handler_test_runner",
       FILE_PATH_LITERAL("manifest.json"),
       "file_browser/app_file_handler",
       FLAGS_USE_FILE_HANDLER)) << message_;
 }
 
 }  // namespace