drive: Drop "Drive" from FakeDriveFileSystem and MockDriveFileSystem

chrome/browser/chromeos/drive/file_system/drive_operations.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/chromeos/drive/file_system/drive_operations.h"
 
 #include "base/callback.h"
 #include "chrome/browser/chromeos/drive/file_system/copy_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/create_directory_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/create_file_operation.h"
@@ skipping 10 matching lines @@
 DriveOperations::DriveOperations() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 DriveOperations::~DriveOperations() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 }
 
 void DriveOperations::Init(
     JobScheduler* job_scheduler,
-    DriveFileSystemInterface* drive_file_system,
+    DriveFileSystemInterface* file_system,
     FileCache* cache,
     internal::ResourceMetadata* metadata,
     scoped_refptr<base::SequencedTaskRunner> blocking_task_runner,
     OperationObserver* observer) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   copy_operation_.reset(new file_system::CopyOperation(job_scheduler,
-                                                       drive_file_system,
+                                                       file_system,
                                                        metadata,
                                                        blocking_task_runner,
                                                        observer));
   create_directory_operation_.reset(
       new CreateDirectoryOperation(job_scheduler,
                                    metadata,
                                    observer));
   create_file_operation_.reset(
       new file_system::CreateFileOperation(job_scheduler,
-                                           drive_file_system,
+                                           file_system,
                                            metadata,
                                            blocking_task_runner));
   move_operation_.reset(new file_system::MoveOperation(job_scheduler,
                                                        metadata,
                                                        observer));
   remove_operation_.reset(new file_system::RemoveOperation(job_scheduler,
                                                            cache,
                                                            metadata,
                                                            observer));
   update_operation_.reset(new file_system::UpdateOperation(cache,
@@ skipping 92 matching lines @@
     DriveClientContext context,
     const FileOperationCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   update_operation_->UpdateFileByResourceId(resource_id, context, callback);
 }
 
 }  // namespace file_system
 }  // namespace drive