Revert of Remove obsolete V8_INFINITY macro.

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index a83a85ce774235f35b44f7bc75d81c078fed7b8e..3e84a2143c3417a987c63eec0834e83b64db05c6 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -1,8 +1,6 @@
 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
-
-#include <limits>
 
 #include "src/v8.h"
 
@@ -800,8 +798,7 @@
 
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13).
-      __ LoadDoubleLiteral(double_scratch,
-                           -std::numeric_limits<double>::infinity(), scratch);
+      __ LoadDoubleLiteral(double_scratch, -V8_INFINITY, scratch);
       __ fcmpu(double_base, double_scratch);
       __ bne(&not_minus_inf1);
       __ fneg(double_result, double_scratch);
@@ -820,8 +817,7 @@
 
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13).
-      __ LoadDoubleLiteral(double_scratch,
-                           -std::numeric_limits<double>::infinity(), scratch);
+      __ LoadDoubleLiteral(double_scratch, -V8_INFINITY, scratch);
       __ fcmpu(double_base, double_scratch);
       __ bne(&not_minus_inf2);
       __ fmr(double_result, kDoubleRegZero);