Remove a bunch of Isolate::Current() callsites from simulators

src/ia32/simulator-ia32.h

Index: src/ia32/simulator-ia32.h
diff --git a/src/ia32/simulator-ia32.h b/src/ia32/simulator-ia32.h
index af7ee3c71b56e809531a01c332a62d71c36765a5..076bde83e608103bee3de1837975e56e97ab0b5e 100644
--- a/src/ia32/simulator-ia32.h
+++ b/src/ia32/simulator-ia32.h
@@ -12,7 +12,7 @@ namespace internal {
 
 // Since there is no simulator for the ia32 architecture the only thing we can
 // do is to call the entry directly.
-#define CALL_GENERATED_CODE(entry, p0, p1, p2, p3, p4) \
+#define CALL_GENERATED_CODE(isolate, entry, p0, p1, p2, p3, p4) \
   (entry(p0, p1, p2, p3, p4))
 
 
@@ -21,7 +21,8 @@ typedef int (*regexp_matcher)(String*, int, const byte*,
 
 // Call the generated regexp code directly. The code at the entry address should
 // expect eight int/pointer sized arguments and return an int.
-#define CALL_GENERATED_REGEXP_CODE(entry, p0, p1, p2, p3, p4, p5, p6, p7, p8) \
+#define CALL_GENERATED_REGEXP_CODE(isolate, entry, p0, p1, p2, p3, p4, p5, p6, \
+                                   p7, p8)                                     \
   (FUNCTION_CAST<regexp_matcher>(entry)(p0, p1, p2, p3, p4, p5, p6, p7, p8))
 
 
@@ -36,11 +37,15 @@ class SimulatorStack : public v8::internal::AllStatic {
     return c_limit;
   }
 
-  static inline uintptr_t RegisterCTryCatch(uintptr_t try_catch_address) {
+  static inline uintptr_t RegisterCTryCatch(v8::internal::Isolate* isolate,
+                                            uintptr_t try_catch_address) {
+    USE(isolate);
     return try_catch_address;
   }
 
-  static inline void UnregisterCTryCatch() { }
+  static inline void UnregisterCTryCatch(v8::internal::Isolate* isolate) {
+    USE(isolate);
+  }
 };
 
 }  // namespace internal