Tidy DEFINE_(THREAD_SAFE_)STATIC_LOCAL() implementations.

third_party/WebKit/Source/platform/heap/Persistent.h

Index: third_party/WebKit/Source/platform/heap/Persistent.h
diff --git a/third_party/WebKit/Source/platform/heap/Persistent.h b/third_party/WebKit/Source/platform/heap/Persistent.h
index 26ef9d1e43b55f3d96db3abe573ab417591ca261..38b56979a3cf1f6b64a36886d8e9ac595e368ec1 100644
--- a/third_party/WebKit/Source/platform/heap/Persistent.h
+++ b/third_party/WebKit/Source/platform/heap/Persistent.h
@@ -164,6 +164,18 @@ class PersistentBase {
     return this;
   }
 
+#if DCHECK_IS_ON()
+  static void enterNoScriptWrappableScope() {
+    DCHECK(ThreadState::current());
+    ThreadState::current()->enterNoScriptWrappableScope();
+  }
+
+  static void leaveNoScriptWrappableScope() {
+    DCHECK(ThreadState::current());
+    ThreadState::current()->leaveNoScriptWrappableScope();
+  }
+#endif
+
  protected:
   NO_SANITIZE_ADDRESS
   T* atomicGet() {
@@ -580,6 +592,18 @@ class PersistentHeapCollectionBase : public Collection {
     return this;
   }
 
+#if DCHECK_IS_ON()
+  static void enterNoScriptWrappableScope() {
+    DCHECK(ThreadState::current());
+    ThreadState::current()->enterNoScriptWrappableScope();
+  }
+
+  static void leaveNoScriptWrappableScope() {
+    DCHECK(ThreadState::current());
+    ThreadState::current()->leaveNoScriptWrappableScope();
+  }
+#endif
+
  private:
   template <typename VisitorDispatcher>
   void tracePersistent(VisitorDispatcher visitor) {