Move more file_util functions to base namespace.

chrome/browser/storage_monitor/image_capture_device_manager_unittest.mm

 // 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.
 
 #import <Foundation/Foundation.h>
 #import <ImageCaptureCore/ImageCaptureCore.h>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 373 matching lines @@
   // contents to a separate filename, mimicking the ImageCaptureCore
   // library behavior. Our code then renames the file onto the requested
   // destination.
   [camera downloadFile:kTestFileName localPath:temp_file];
   base::RunLoop().RunUntilIdle();
 
   ASSERT_EQ(2U, listener_.downloads().size());
   EXPECT_EQ(kTestFileName, listener_.downloads()[1]);
   ASSERT_EQ(base::PLATFORM_FILE_OK, listener_.last_error());
   char file_contents[5];
-  ASSERT_EQ(4, file_util::ReadFile(temp_file, file_contents,
-                                   strlen(kTestFileContents)));
+  ASSERT_EQ(4, base::ReadFile(temp_file, file_contents,
+                              strlen(kTestFileContents)));
   EXPECT_EQ(kTestFileContents,
             std::string(file_contents, strlen(kTestFileContents)));
 
   [camera didRemoveDevice:device];
 }
 
 TEST_F(ImageCaptureDeviceManagerTest, TestSubdirectories) {
   ImageCaptureDeviceManager manager;
   manager.SetNotifications(monitor_->receiver());
   MockICCameraDevice* device = AttachDevice(&manager);
@@ skipping 12 matching lines @@
   [camera cameraDevice:nil didAddItem:picture1];
 
   base::ScopedTempDir temp_dir;
   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
   base::FilePath temp_file = temp_dir.path().Append("tempfile");
 
   [camera downloadFile:("dir/" + kTestFileName) localPath:temp_file];
   base::RunLoop().RunUntilIdle();
 
   char file_contents[5];
-  ASSERT_EQ(4, file_util::ReadFile(temp_file, file_contents,
-                                   strlen(kTestFileContents)));
+  ASSERT_EQ(4, base::ReadFile(temp_file, file_contents,
+                              strlen(kTestFileContents)));
   EXPECT_EQ(kTestFileContents,
             std::string(file_contents, strlen(kTestFileContents)));
 
   [camera didRemoveDevice:device];
 }