Change {Obfuscated|Local}FileSystemFileUtil non-Singleton to take an underlying *FileUtil.

webkit/fileapi/file_system_operation_unittest.cc

Index: webkit/fileapi/file_system_operation_unittest.cc
diff --git a/webkit/fileapi/file_system_operation_unittest.cc b/webkit/fileapi/file_system_operation_unittest.cc
index 9cd6103d2064604d51ba93f2c0a045a01ac2332b..2488b4b552fc5f11b950c91fed081f0596f54212 100644
--- a/webkit/fileapi/file_system_operation_unittest.cc
+++ b/webkit/fileapi/file_system_operation_unittest.cc
@@ -248,6 +248,7 @@ class FileSystemOperationTest : public testing::Test {
   std::vector<base::FileUtilProxy::Entry> entries_;
 
  private:
+  scoped_ptr<LocalFileSystemFileUtil> local_file_util_;
   scoped_refptr<QuotaManager> quota_manager_;
   scoped_refptr<QuotaManagerProxy> quota_manager_proxy_;
   DISALLOW_COPY_AND_ASSIGN(FileSystemOperationTest);
@@ -297,6 +298,8 @@ class MockDispatcher : public FileSystemCallbackDispatcher {
 
 void FileSystemOperationTest::SetUp() {
   FilePath base_dir = base_.path().AppendASCII("filesystem");
+  local_file_util_.reset(
+      new LocalFileSystemFileUtil(QuotaFileUtil::GetInstance()));
   quota_manager_ = new MockQuotaManager(
       base_dir, test_helper_.origin(), test_helper_.storage_type());
   quota_manager_proxy_ = new MockQuotaManagerProxy(quota_manager_.get());
@@ -304,7 +307,7 @@ void FileSystemOperationTest::SetUp() {
                      false /* incognito */,
                      false /* unlimited quota */,
                      quota_manager_proxy_.get(),
-                     LocalFileSystemFileUtil::GetInstance());
+                     local_file_util_.get());
 }
 
 void FileSystemOperationTest::TearDown() {
@@ -313,6 +316,7 @@ void FileSystemOperationTest::TearDown() {
   quota_manager_ = NULL;
   quota_manager_proxy_ = NULL;
   test_helper_.TearDown();
+  local_file_util_.reset();
 }
 
 FileSystemOperation* FileSystemOperationTest::operation() {