Switch to static_assert in base/.

base/metrics/field_trial.cc

Index: base/metrics/field_trial.cc
diff --git a/base/metrics/field_trial.cc b/base/metrics/field_trial.cc
index 2ad7517a4bd59e22d0247c8d03c169b014b25829..e9e3be245702561fc7fdf31e74dae74085c9fea3 100644
--- a/base/metrics/field_trial.cc
+++ b/base/metrics/field_trial.cc
@@ -325,12 +325,11 @@ FieldTrial* FieldTrialList::FactoryGetFieldTrialWithRandomizationSeed(
         // group number, so that it does not conflict with the |AppendGroup()|
         // result for the chosen group.
         const int kNonConflictingGroupNumber = -2;
-        COMPILE_ASSERT(
+        static_assert(
             kNonConflictingGroupNumber != FieldTrial::kDefaultGroupNumber,
-            conflicting_default_group_number);
-        COMPILE_ASSERT(
-            kNonConflictingGroupNumber != FieldTrial::kNotFinalized,
-            conflicting_default_group_number);
+            "The 'non-conflicting' group number conflicts");
+        static_assert(kNonConflictingGroupNumber != FieldTrial::kNotFinalized,
+                      "The 'non-conflicting' group number conflicts");
         *default_group_number = kNonConflictingGroupNumber;
       }
     }