Refactor thread_local.h's TLS Implementation to use ThreadLocalStorage

base/threading/thread_local_storage.h

Index: base/threading/thread_local_storage.h
diff --git a/base/threading/thread_local_storage.h b/base/threading/thread_local_storage.h
index bc956a73bc058f51498ef733a4bc45aecbd53e9b..dc0903fb72ce9c2eb20effdd1530cc3f2fd8ff39 100644
--- a/base/threading/thread_local_storage.h
+++ b/base/threading/thread_local_storage.h
@@ -20,9 +20,12 @@ namespace base {
 
 namespace internal {
 
-// WARNING: You should *NOT* be using this class directly.
-// PlatformThreadLocalStorage is low-level abstraction to the OS's TLS
-// interface, you should instead be using ThreadLocalStorage::StaticSlot/Slot.
+// WARNING: You should *NOT* use this class directly.
+// PlatformThreadLocalStorage is a low-level abstraction of the OS's TLS
+// interface. Instead, you should use one of the following:
+// * ThreadLocalBoolean (from thread_local.h) for booleans.
+// * ThreadLocalPointer (from thread_local.h) for pointers.
+// * ThreadLocalStorage::StaticSlot/Slot for more direct control of the slot.
 class BASE_EXPORT PlatformThreadLocalStorage {
  public: