Fixed compilation with older clang versions.

src/base/division-by-constant.cc

Index: src/base/division-by-constant.cc
diff --git a/src/base/division-by-constant.cc b/src/base/division-by-constant.cc
index 235d39fe570a0a720692bedf2184e3a5e97cafbc..5167b7a60c9f0ac9a9f1358c1e7a303e5aa2a737 100644
--- a/src/base/division-by-constant.cc
+++ b/src/base/division-by-constant.cc
@@ -52,7 +52,7 @@ MagicNumbersForDivision<T> SignedDivisionByConstant(T d) {
     delta = ad - r2;
   } while (q1 < delta || (q1 == delta && r1 == 0));
   T mul = q2 + 1;
-  return {neg ? (0 - mul) : mul, p - bits, false};
+  return MagicNumbersForDivision<T>(neg ? (0 - mul) : mul, p - bits, false);
 }
 
 
@@ -93,7 +93,7 @@ MagicNumbersForDivision<T> UnsignedDivisionByConstant(T d,
     }
     delta = d - 1 - r2;
   } while (p < bits * 2 && (q1 < delta || (q1 == delta && r1 == 0)));
-  return {q2 + 1, p - bits, a};
+  return MagicNumbersForDivision<T>(q2 + 1, p - bits, a);
 }