Use std::default_delete as the default deleter for scoped_ptr.

sql/mojo/vfs_unittest.cc

 // Copyright 2015 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 <memory>
 #include "components/filesystem/public/interfaces/file_system.mojom.h"
 #include "mojo/application/public/cpp/application_impl.h"
 #include "mojo/application/public/cpp/application_test_base.h"
 #include "mojo/util/capture_util.h"
 #include "sql/mojo/mojo_vfs.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/sqlite/sqlite3.h"
 
-namespace base {
+namespace std {
 
 // This deleter lets us be safe with sqlite3 objects, which aren't really the
 // structs, but slabs of new uint8_t[size].
 template <>
-struct DefaultDeleter<sqlite3_file> {
+struct default_delete<sqlite3_file> {
   inline void operator()(sqlite3_file* ptr) const {
     // Why don't we call file->pMethods->xClose() here? Because it's not
     // guaranteed to be valid. sqlite3_file "objects" can be in partially
     // initialized states.
     delete [] reinterpret_cast<uint8_t*>(ptr);
   }
 };
 
-}  // namespace base
+}  // namespace std
 
 namespace sql {
 
 const char kFileName[] = "TestingDatabase.db";
 
 class VFSTest : public mojo::test::ApplicationTestBase,
                 public filesystem::FileSystemClient {
  public:
   VFSTest() : binding_(this) {}
   ~VFSTest() override {}
@@ skipping 292 matching lines @@
   EXPECT_EQ(SQLITE_OK, rc);
 
   rc = file->pMethods->xFileSize(file.get(), &size);
   EXPECT_EQ(SQLITE_OK, rc);
   EXPECT_EQ(kCharsToThree, size);
 
   file->pMethods->xClose(file.get());
 }
 
 }  // namespace sql