Update //base to chromium 9659b08ea5a34f889dc4166217f438095ddc10d2

base/metrics/field_trial_unittest.cc

Index: base/metrics/field_trial_unittest.cc
diff --git a/base/metrics/field_trial_unittest.cc b/base/metrics/field_trial_unittest.cc
index f1a104258525426e2c7e8d1c3412021b1b3398cd..ed84d865d5ef081a4017f9e06eda7e9262ce3a4a 100644
--- a/base/metrics/field_trial_unittest.cc
+++ b/base/metrics/field_trial_unittest.cc
@@ -1021,9 +1021,9 @@ TEST_F(FieldTrialTest, FloatBoundariesGiveEqualGroupSizes) {
     scoped_refptr<base::FieldTrial> trial(
         new base::FieldTrial("test", kBucketCount, "default", entropy));
     for (int j = 0; j < kBucketCount; ++j)
-      trial->AppendGroup(base::StringPrintf("%d", j), 1);
+      trial->AppendGroup(base::IntToString(j), 1);
 
-    EXPECT_EQ(base::StringPrintf("%d", i), trial->group_name());
+    EXPECT_EQ(base::IntToString(i), trial->group_name());
   }
 }