[Isolates] Cleanup of codepaths slowing down Dromaeo in browser.

src/isolate.h

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 89 matching lines @@
 
 // Static indirection table for handles to constants.  If a frame
 // element represents a constant, the data contains an index into
 // this table of handles to the actual constants.
 // Static indirection table for handles to constants.  If a Result
 // represents a constant, the data contains an index into this table
 // of handles to the actual constants.
 typedef ZoneList<Handle<Object> > ZoneObjectList;
 
 // TODO(isolates): pass isolate pointer here.
-#define RETURN_IF_SCHEDULED_EXCEPTION()              \
-  if (Isolate::Current()->has_scheduled_exception()) \
-      return Isolate::Current()->PromoteScheduledException()
+#define RETURN_IF_SCHEDULED_EXCEPTION(isolate)    \
+  if (isolate->has_scheduled_exception())         \
+      return isolate->PromoteScheduledException()
 
 #define ISOLATE_ADDRESS_LIST(C)            \
   C(handler_address)                       \
   C(c_entry_fp_address)                    \
   C(context_address)                       \
   C(pending_exception_address)             \
   C(external_caught_exception_address)
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 #define ISOLATE_ADDRESS_LIST_PROF(C)       \
@@ skipping 1086 matching lines @@
 
 } }  // namespace v8::internal
 
 // TODO(isolates): Get rid of these -inl.h includes and place them only where
 //                 they're needed.
 #include "allocation-inl.h"
 #include "zone-inl.h"
 #include "frames-inl.h"
 
 #endif  // V8_ISOLATE_H_