Remove the dependency of Zone on Isolate

src/ia32/regexp-macro-assembler-ia32.h

Index: src/ia32/regexp-macro-assembler-ia32.h
diff --git a/src/ia32/regexp-macro-assembler-ia32.h b/src/ia32/regexp-macro-assembler-ia32.h
index 8f6499cba9285f6a8b02044bf5d57a0a70fa116e..2927a260779110fa5a16d1441c1fe8e050d46625 100644
--- a/src/ia32/regexp-macro-assembler-ia32.h
+++ b/src/ia32/regexp-macro-assembler-ia32.h
@@ -15,7 +15,8 @@ namespace internal {
 #ifndef V8_INTERPRETED_REGEXP
 class RegExpMacroAssemblerIA32: public NativeRegExpMacroAssembler {
  public:
-  RegExpMacroAssemblerIA32(Mode mode, int registers_to_save, Zone* zone);
+  RegExpMacroAssemblerIA32(Isolate* isolate, Zone* zone, Mode mode,
+                           int registers_to_save);
   virtual ~RegExpMacroAssemblerIA32();
   virtual int stack_limit_slack();
   virtual void AdvanceCurrentPosition(int by);