diff --git a/metrics/metrics.gyp b/metrics/metrics.gyp
index 834e52f..3d7c2d5 100644
--- a/metrics/metrics.gyp
+++ b/metrics/metrics.gyp
@@ -1,6 +1,6 @@
 {
   'variables': {
-    'libbase_ver': 242728,
+    'libbase_ver': 271506,
   },
   'target_defaults': {
     'dependencies': [
diff --git a/metrics/metrics_daemon_test.cc b/metrics/metrics_daemon_test.cc
index 264d5cd..33d0d11 100644
--- a/metrics/metrics_daemon_test.cc
+++ b/metrics/metrics_daemon_test.cc
@@ -172,8 +172,8 @@
     std::string frequency_string = StringPrintf("%d\n", frequency);
     int frequency_string_length = frequency_string.length();
     EXPECT_EQ(frequency_string.length(),
-        file_util::WriteFile(path, frequency_string.c_str(),
-            frequency_string_length));
+              base::WriteFile(path, frequency_string.c_str(),
+                              frequency_string_length));
   }
 
   // The MetricsDaemon under test.
@@ -193,7 +193,7 @@
   EXPECT_FALSE(daemon_.CheckSystemCrash(kKernelCrashDetected));
 
   base::FilePath crash_detected(kKernelCrashDetected);
-  file_util::WriteFile(crash_detected, "", 0);
+  base::WriteFile(crash_detected, "", 0);
   EXPECT_TRUE(base::PathExists(crash_detected));
   EXPECT_TRUE(daemon_.CheckSystemCrash(kKernelCrashDetected));
   EXPECT_FALSE(base::PathExists(crash_detected));
diff --git a/metrics/metrics_library_test.cc b/metrics/metrics_library_test.cc
index f6cd7e7..377495f 100644
--- a/metrics/metrics_library_test.cc
+++ b/metrics/metrics_library_test.cc
@@ -70,9 +70,9 @@
                                     buffer,
                                     1,
                                     &result));
-  ASSERT_TRUE(file_util::WriteFile(base::FilePath(kTestMounts),
-                                   kTestContents,
-                                   strlen(kTestContents)));
+  ASSERT_TRUE(base::WriteFile(base::FilePath(kTestMounts),
+                              kTestContents,
+                              strlen(kTestContents)));
   EXPECT_FALSE(lib_.IsDeviceMounted("guestfs",
                                     kTestMounts,
                                     buffer,