[Isolates] Pass isolate to VMState constructor.

src/cpu-profiler.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 208 matching lines @@
     }                                                  \
   } while (false)
 #else
 #define PROFILE(Call) LOG(Call)
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 
 namespace v8 {
 namespace internal {
 
+
+// TODO(isolates): isolatify this class.
 class CpuProfiler {
  public:
   static void Setup();
   static void TearDown();
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
   static void StartProfiling(const char* title);
   static void StartProfiling(String* title);
   static CpuProfile* StopProfiling(const char* title);
   static CpuProfile* StopProfiling(Object* security_token, String* title);
@@ skipping 24 matching lines @@
   // if it was created from compiled code).
   static void FunctionCreateEventFromMove(Heap* heap, JSFunction* function);
   static void FunctionMoveEvent(Heap* heap, Address from, Address to);
   static void FunctionDeleteEvent(Address from);
   static void GetterCallbackEvent(String* name, Address entry_point);
   static void RegExpCodeCreateEvent(Code* code, String* source);
   static void ProcessMovedFunctions();
   static void SetterCallbackEvent(String* name, Address entry_point);
 
   static INLINE(bool is_profiling()) {
-    Isolate* isolate = Isolate::Current();
+    return is_profiling(Isolate::Current());
+  }
+
+  static INLINE(bool is_profiling(Isolate* isolate)) {
     return isolate->cpu_profiler() != NULL &&
            isolate->cpu_profiler()->processor_ != NULL;
   }
 
  private:
   CpuProfiler();
   ~CpuProfiler();
   void StartCollectingProfile(const char* title);
   void StartCollectingProfile(String* title);
   void StartProcessorIfNotStarted();
@@ skipping 13 matching lines @@
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CpuProfiler);
 };
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_CPU_PROFILER_H_