Remove obsolete V8_INFINITY macro.

src/mips/lithium-codegen-mips.cc

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+#include <limits>
+
 #include "src/v8.h"
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/hydrogen-osr.h"
 #include "src/ic/ic.h"
 #include "src/ic/stub-cache.h"
 #include "src/mips/lithium-codegen-mips.h"
 #include "src/mips/lithium-gap-resolver-mips.h"
@@ skipping 3797 matching lines @@
   DoubleRegister input = ToDoubleRegister(instr->value());
   DoubleRegister result = ToDoubleRegister(instr->result());
   DoubleRegister temp = ToDoubleRegister(instr->temp());
 
   DCHECK(!input.is(result));
 
   // Note that according to ECMA-262 15.8.2.13:
   // Math.pow(-Infinity, 0.5) == Infinity
   // Math.sqrt(-Infinity) == NaN
   Label done;
-  __ Move(temp, static_cast<double>(-V8_INFINITY));
+  __ Move(temp, std::numeric_limits<double>::infinity());
   __ BranchF(USE_DELAY_SLOT, &done, NULL, eq, temp, input);
   // Set up Infinity in the delay slot.
   // result is overwritten if the branch is not taken.
   __ neg_d(result, temp);
 
   // Add +0 to convert -0 to +0.
   __ add_d(result, input, kDoubleRegZero);
   __ sqrt_d(result, result);
   __ bind(&done);
 }
@@ skipping 2105 matching lines @@
   __ li(at, scope_info);
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal