Remove CrossThreadPersistent::release

third_party/WebKit/Source/platform/Supplementable.h

Index: third_party/WebKit/Source/platform/Supplementable.h
diff --git a/third_party/WebKit/Source/platform/Supplementable.h b/third_party/WebKit/Source/platform/Supplementable.h
index 89ec8b17ae08731c17a76e8ef382e231ef8e6241..de85ea740c560c57a332b4532a98d10595bd7316 100644
--- a/third_party/WebKit/Source/platform/Supplementable.h
+++ b/third_party/WebKit/Source/platform/Supplementable.h
@@ -120,28 +120,28 @@ class Supplementable : public virtual GarbageCollectedMixin {
  public:
   void provideSupplement(const char* key, Supplement<T>* supplement) {
 #if DCHECK_IS_ON()
-    DCHECK_EQ(m_threadId, currentThread());
+    DCHECK_EQ(m_creationThreadId, currentThread());
 #endif
     this->m_supplements.set(key, supplement);
   }
 
   void removeSupplement(const char* key) {
 #if DCHECK_IS_ON()
-    DCHECK_EQ(m_threadId, currentThread());
+    DCHECK_EQ(m_creationThreadId, currentThread());
 #endif
     this->m_supplements.remove(key);
   }
 
   Supplement<T>* requireSupplement(const char* key) {
 #if DCHECK_IS_ON()
-    DCHECK_EQ(m_threadId, currentThread());
+    DCHECK_EQ(m_attachedThreadId, currentThread());
 #endif
     return this->m_supplements.get(key);
   }
 
   void reattachThread() {
 #if DCHECK_IS_ON()
-    m_threadId = currentThread();
+    m_attachedThreadId = currentThread();
 #endif
   }
 
@@ -154,14 +154,16 @@ class Supplementable : public virtual GarbageCollectedMixin {
 
   Supplementable()
 #if DCHECK_IS_ON()
-      : m_threadId(currentThread())
+      : m_attachedThreadId(currentThread()),
+        m_creationThreadId(currentThread())
 #endif
   {
   }
 
 #if DCHECK_IS_ON()
  private:
-  ThreadIdentifier m_threadId;
+  ThreadIdentifier m_attachedThreadId;
+  ThreadIdentifier m_creationThreadId;
 #endif
 };