Move WriteFile and WriteFileDescriptor from file_util to base namespace.

base/json/json_value_serializer_unittest.cc

Index: base/json/json_value_serializer_unittest.cc
diff --git a/base/json/json_value_serializer_unittest.cc b/base/json/json_value_serializer_unittest.cc
index 44c0a57cd27b07d2009394e3023be6411e48e9ab..f8d3a20109ac5e828125f107808d5caffff3eccb 100644
--- a/base/json/json_value_serializer_unittest.cc
+++ b/base/json/json_value_serializer_unittest.cc
@@ -118,7 +118,7 @@ TEST(JSONValueSerializerTest, ReadProperJSONFromFile) {
   // Write it down in the file.
   FilePath temp_file(tempdir.path().AppendASCII("test.json"));
   ASSERT_EQ(static_cast<int>(strlen(kProperJSON)),
-            file_util::WriteFile(temp_file, kProperJSON, strlen(kProperJSON)));
+            WriteFile(temp_file, kProperJSON, strlen(kProperJSON)));
 
   // Try to deserialize it through the serializer.
   JSONFileValueSerializer file_deserializer(temp_file);
@@ -142,9 +142,8 @@ TEST(JSONValueSerializerTest, ReadJSONWithCommasFromFile) {
   // Write it down in the file.
   FilePath temp_file(tempdir.path().AppendASCII("test.json"));
   ASSERT_EQ(static_cast<int>(strlen(kProperJSONWithCommas)),
-            file_util::WriteFile(temp_file,
-                                 kProperJSONWithCommas,
-                                 strlen(kProperJSONWithCommas)));
+            WriteFile(temp_file, kProperJSONWithCommas,
+                      strlen(kProperJSONWithCommas)));
 
   // Try to deserialize it through the serializer.
   JSONFileValueSerializer file_deserializer(temp_file);