Refactoring: Change all -FileUtils non-Singleton and to own underlying FileUtils.

chrome/browser/extensions/extension_file_browser_private_api.cc

Index: chrome/browser/extensions/extension_file_browser_private_api.cc
diff --git a/chrome/browser/extensions/extension_file_browser_private_api.cc b/chrome/browser/extensions/extension_file_browser_private_api.cc
index 93fbb2e655da52e117999132d462b2a9afeecb69..b060c5772a5ff11dddf786eefeb697faf16323df 100644
--- a/chrome/browser/extensions/extension_file_browser_private_api.cc
+++ b/chrome/browser/extensions/extension_file_browser_private_api.cc
@@ -695,16 +695,11 @@ class ExecuteTasksFileSystemCallbackDispatcher
 
     // Check if this file system entry exists first.
     base::PlatformFileInfo file_info;
-    FilePath platform_path;
-    fileapi::FileSystemOperationContext file_system_operation_context(
-        profile_->GetFileSystemContext(),
-        external_provider->GetFileSystemFileUtil());
-    if (base::PLATFORM_FILE_OK !=
-            fileapi::FileSystemFileUtil::GetInstance()->GetFileInfo(
-                &file_system_operation_context, final_file_path, &file_info,
-                &platform_path)) {
+
+    if (!file_util::PathExists(final_file_path) ||
+        file_util::IsLink(final_file_path) ||
+        !file_util::GetFileInfo(final_file_path, &file_info))
       return false;
-    }
 
     // TODO(zelidrag): Let's just prevent all symlinks for now. We don't want a
     // USB drive content to point to something in the rest of the file system.