Remove some PlatformFile uses from WebKit

webkit/browser/fileapi/sandbox_origin_database_unittest.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 <algorithm>
 #include <functional>
 #include <limits>
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
+#include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
-#include "base/platform_file.h"
 #include "base/stl_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/leveldatabase/src/db/filename.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 #include "webkit/browser/fileapi/sandbox_database_test_helper.h"
 #include "webkit/browser/fileapi/sandbox_origin_database.h"
 #include "webkit/common/fileapi/file_system_util.h"
 
 namespace fileapi {
 
@@ skipping 192 matching lines @@
     EXPECT_TRUE(database->GetPathForOrigin(kOrigins[i], &path));
 
     if (i != 1)
       EXPECT_TRUE(base::CreateDirectory(kFSDir.Append(path)));
   }
   database.reset();
 
   const base::FilePath kGarbageDir = kFSDir.AppendASCII("foo");
   const base::FilePath kGarbageFile = kGarbageDir.AppendASCII("bar");
   EXPECT_TRUE(base::CreateDirectory(kGarbageDir));
-  bool created = false;
-  base::PlatformFileError error;
-  base::PlatformFile file = base::CreatePlatformFile(
-      kGarbageFile,
-      base::PLATFORM_FILE_CREATE | base::PLATFORM_FILE_WRITE,
-      &created, &error);
-  EXPECT_EQ(base::PLATFORM_FILE_OK, error);
-  EXPECT_TRUE(created);
-  EXPECT_TRUE(base::ClosePlatformFile(file));
+  base::File file(kGarbageFile,
+                  base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  EXPECT_TRUE(file.IsValid());
+  file.Close();
 
   // Corrupt database itself and last log entry to drop last 1 database
   // operation.  The database should detect the corruption and should recover
   // its consistency after recovery.
   CorruptDatabase(kDBDir, leveldb::kDescriptorFile,
                   0, std::numeric_limits<size_t>::max());
   CorruptDatabase(kDBDir, leveldb::kLogFile, -1, 1);
 
   base::FilePath path;
   database.reset(new SandboxOriginDatabase(kFSDir, NULL));
@@ skipping 53 matching lines @@
 
     const std::string kOrigin2("piyo.example.org");
     EXPECT_FALSE(database->HasOriginPath(kOrigin2));
     EXPECT_TRUE(database->GetPathForOrigin(kOrigin2, &path));
     EXPECT_FALSE(path.empty());
     EXPECT_TRUE(database->HasOriginPath(kOrigin2));
   }
 }
 
 }  // namespace fileapi