shill: Update to build against libchrome-271506.

BUG=chromium:375032
TEST=`USE='cellular gdmwimax wimax vpn' FEATURES=test emerge-$BOARD platform2`

Change-Id: Ib7c8b2b290caa261cbb61d30cf8a361a1e3345e1
Reviewed-on: https://chromium-review.googlesource.com/201211
Tested-by: Ben Chan <benchan@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
diff --git a/device_info_unittest.cc b/device_info_unittest.cc
index d649d81..c19bbc6 100644
--- a/device_info_unittest.cc
+++ b/device_info_unittest.cc
@@ -1189,8 +1189,8 @@
   FilePath info_path = GetInfoPath(name);
   EXPECT_TRUE(base::CreateDirectory(info_path.DirName()));
   string contents_newline(contents + "\n");
-  EXPECT_TRUE(file_util::WriteFile(info_path, contents_newline.c_str(),
-                                   contents_newline.size()));
+  EXPECT_TRUE(base::WriteFile(info_path, contents_newline.c_str(),
+                              contents_newline.size()));
 }
 
 void DeviceInfoTechnologyTest::CreateInfoSymLink(const string &name,