Convert COMPILE_ASSERT to static_assert

util/posix/symbolic_constants_posix.cc

Index: util/posix/symbolic_constants_posix.cc
diff --git a/util/posix/symbolic_constants_posix.cc b/util/posix/symbolic_constants_posix.cc
index 6846c5d241910d8e522e7acc22cf7b7cdf22ba7b..c5a4968bd4b43a4359224e0638ae330ff8ce9722 100644
--- a/util/posix/symbolic_constants_posix.cc
+++ b/util/posix/symbolic_constants_posix.cc
@@ -99,9 +99,9 @@ const char* kSignalNames[] = {
 };
 #if defined(OS_LINUX)
 // NSIG is 64 to account for real-time signals.
-COMPILE_ASSERT(arraysize(kSignalNames) == 32, kSignalNames_length);
+static_assert(arraysize(kSignalNames) == 32, "kSignalNames length");
 #else
-COMPILE_ASSERT(arraysize(kSignalNames) == NSIG, kSignalNames_length);
+static_assert(arraysize(kSignalNames) == NSIG, "kSignalNames length");
 #endif
 
 const char kSigPrefix[] = "SIG";