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

src/platform-win32.cc

Index: src/platform-win32.cc
diff --git a/src/platform-win32.cc b/src/platform-win32.cc
index 89991c9378054284b97429b7971d77085f5a9b2d..b3c1ae0572453f64758de0695d07a800369934f4 100644
--- a/src/platform-win32.cc
+++ b/src/platform-win32.cc
@@ -856,7 +856,7 @@ void* OS::Allocate(const size_t requested,
     mbase = VirtualAlloc(NULL, msize, MEM_COMMIT | MEM_RESERVE, prot);
 
   if (mbase == NULL) {
-    LOG(StringEvent("OS::Allocate", "VirtualAlloc failed"));
+    LOG(ISOLATE,StringEvent("OS::Allocate", "VirtualAlloc failed"));
     return NULL;
   }
 
@@ -1199,7 +1199,7 @@ static bool LoadSymbols(HANDLE process_handle) {
       if (err != ERROR_MOD_NOT_FOUND &&
           err != ERROR_INVALID_HANDLE) return false;
     }
-    LOG(SharedLibraryEvent(
+    LOG(i::Isolate::Current(),SharedLibraryEvent(
             module_entry.szExePath,
             reinterpret_cast<unsigned int>(module_entry.modBaseAddr),
             reinterpret_cast<unsigned int>(module_entry.modBaseAddr +