Adding 'isolates' argument to LOG to get rid of multiple TLS fetches in profiling.

src/cpu-profiler.h

Index: src/cpu-profiler.h
diff --git a/src/cpu-profiler.h b/src/cpu-profiler.h
index 36cb8ea03d3d41870f27ca0ba5f1f1ac9cbe3bd2..9485d0c19709cc97c5c5728283424a541142f61f 100644
--- a/src/cpu-profiler.h
+++ b/src/cpu-profiler.h
@@ -197,15 +197,15 @@ class ProfilerEventsProcessor : public Thread {
 } }  // namespace v8::internal
 
 
-#define PROFILE(Call)                                  \
-  LOG(Call);                                           \
+#define PROFILE(isolate, Call)                         \
+  LOG(isolate, Call);                                  \
   do {                                                 \
     if (v8::internal::CpuProfiler::is_profiling()) {   \
       v8::internal::CpuProfiler::Call;                 \
     }                                                  \
   } while (false)
 #else
-#define PROFILE(Call) LOG(Call)
+#define PROFILE(isolate, Call) LOG(isolate, Call)
 #endif  // ENABLE_LOGGING_AND_PROFILING