X87: Remove the dependency of Zone on Isolate

src/x87/regexp-macro-assembler-x87.h

Index: src/x87/regexp-macro-assembler-x87.h
diff --git a/src/x87/regexp-macro-assembler-x87.h b/src/x87/regexp-macro-assembler-x87.h
index 3655bd9626438b4acad0c2b1ff91980f7e976dd9..f8932627040b36fb87858d89185001ddcf61313f 100644
--- a/src/x87/regexp-macro-assembler-x87.h
+++ b/src/x87/regexp-macro-assembler-x87.h
@@ -15,7 +15,8 @@ namespace internal {
 #ifndef V8_INTERPRETED_REGEXP
 class RegExpMacroAssemblerX87: public NativeRegExpMacroAssembler {
  public:
-  RegExpMacroAssemblerX87(Mode mode, int registers_to_save, Zone* zone);
+  RegExpMacroAssemblerX87(Isolate* isolate, Zone* zone, Mode mode,
+                          int registers_to_save);
   virtual ~RegExpMacroAssemblerX87();
   virtual int stack_limit_slack();
   virtual void AdvanceCurrentPosition(int by);