Move WriteFile and WriteFileDescriptor from file_util to base namespace.

chrome/browser/chromeos/extensions/external_cache_unittest.cc

 // Copyright 2013 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 "chrome/browser/chromeos/extensions/external_cache.h"
 
 #include <map>
 #include <set>
 #include <string>
 
@@ skipping 92 matching lines @@
         extensions::LocalExtensionCache::kCacheReadyFlagFileName));
   }
 
   void CreateExtensionFile(const base::FilePath& dir,
                            const std::string& id,
                            const std::string& version) {
     CreateFile(GetExtensionFile(dir, id, version));
   }
 
   void CreateFile(const base::FilePath& file) {
-    EXPECT_EQ(file_util::WriteFile(file, NULL, 0), 0);
+    EXPECT_EQ(base::WriteFile(file, NULL, 0), 0);
   }
 
   base::FilePath GetExtensionFile(const base::FilePath& dir,
                                   const std::string& id,
                                   const std::string& version) {
     return dir.Append(id + "-" + version + ".crx");
   }
 
   base::DictionaryValue* CreateEntryWithUpdateUrl(bool from_webstore) {
     base::DictionaryValue* entry = new base::DictionaryValue;
@@ skipping 183 matching lines @@
   ASSERT_TRUE(provided_prefs()->GetDictionary(kTestExtensionId1, &entry1));
   EXPECT_TRUE(entry1->HasKey(
       extensions::ExternalProviderImpl::kExternalUpdateUrl));
   EXPECT_FALSE(entry1->HasKey(
       extensions::ExternalProviderImpl::kExternalCrx));
   EXPECT_FALSE(entry1->HasKey(
       extensions::ExternalProviderImpl::kExternalVersion));
 }
 
 }  // namespace chromeos