Canonicalize handles for optimized compilation.

src/mips64/macro-assembler-mips64.cc

Index: src/mips64/macro-assembler-mips64.cc
diff --git a/src/mips64/macro-assembler-mips64.cc b/src/mips64/macro-assembler-mips64.cc
index 4d5237bac0c6a5388c9f3a428805641304cb194e..9174680011b1d176c7a2bc720b8d89b765b483f9 100644
--- a/src/mips64/macro-assembler-mips64.cc
+++ b/src/mips64/macro-assembler-mips64.cc
@@ -23,8 +23,8 @@ MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
       has_frame_(false),
       has_double_zero_reg_set_(false) {
   if (isolate() != NULL) {
-    code_object_ = Handle<Object>(isolate()->heap()->undefined_value(),
-                                  isolate());
+    code_object_ =
+        Handle<Object>::New(isolate()->heap()->undefined_value(), isolate());
   }
 }