Switch to static_assert in base/.

base/rand_util.cc

Index: base/rand_util.cc
diff --git a/base/rand_util.cc b/base/rand_util.cc
index e12088e54344a9f0ba2de21d45a0cd467bd016df..be28f7adc577d9ddc98badabaed5d610c0a11b86 100644
--- a/base/rand_util.cc
+++ b/base/rand_util.cc
@@ -38,7 +38,8 @@ double BitsToOpenEndedUnitInterval(uint64_t bits) {
   // produce output in the range [0, 1).  For IEEE 754 doubles, the mantissa
   // is expected to accommodate 53 bits.
 
-  COMPILE_ASSERT(std::numeric_limits<double>::radix == 2, otherwise_use_scalbn);
+  static_assert(std::numeric_limits<double>::radix == 2,
+                "otherwise_use_scalbn");
   static const int kBits = std::numeric_limits<double>::digits;
   uint64_t random_bits = bits & ((UINT64_C(1) << kBits) - 1);
   double result = ldexp(static_cast<double>(random_bits), -1 * kBits);