Oilpan: Introduce class MainThreadOnly

Source/platform/heap/Heap.h

Index: Source/platform/heap/Heap.h
diff --git a/Source/platform/heap/Heap.h b/Source/platform/heap/Heap.h
index aaa91892dcebc1b96df3b475168c9c0a5cf7998f..c5d4225baf21da1ce19914d151d3085d8b18f0bf 100644
--- a/Source/platform/heap/Heap.h
+++ b/Source/platform/heap/Heap.h
@@ -1550,14 +1550,14 @@ public:
     static void enterNoAllocationScope()
     {
 #if ENABLE(ASSERT)
-        ThreadStateFor<AnyThread>::state()->enterNoAllocationScope();
+        ThreadStateFor<AnyThreadAffinity>::state()->enterNoAllocationScope();
 #endif
     }
 
     static void leaveNoAllocationScope()
     {
 #if ENABLE(ASSERT)
-        ThreadStateFor<AnyThread>::state()->leaveNoAllocationScope();
+        ThreadStateFor<AnyThreadAffinity>::state()->leaveNoAllocationScope();
 #endif
     }
 
@@ -1761,15 +1761,15 @@ struct ThreadingTrait<WeakMember<T> > {
 template<typename Key, typename Value, typename T, typename U, typename V>
 struct ThreadingTrait<HashMap<Key, Value, T, U, V, HeapAllocator> > {
     static const ThreadAffinity Affinity =
-        (ThreadingTrait<Key>::Affinity == MainThreadOnly)
-        && (ThreadingTrait<Value>::Affinity == MainThreadOnly) ? MainThreadOnly : AnyThread;
+        (ThreadingTrait<Key>::Affinity == MainThreadAffinity)
+        && (ThreadingTrait<Value>::Affinity == MainThreadAffinity) ? MainThreadAffinity : AnyThreadAffinity;
 };
 
 template<typename First, typename Second>
 struct ThreadingTrait<WTF::KeyValuePair<First, Second> > {
     static const ThreadAffinity Affinity =
-        (ThreadingTrait<First>::Affinity == MainThreadOnly)
-        && (ThreadingTrait<Second>::Affinity == MainThreadOnly) ? MainThreadOnly : AnyThread;
+        (ThreadingTrait<First>::Affinity == MainThreadAffinity)
+        && (ThreadingTrait<Second>::Affinity == MainThreadAffinity) ? MainThreadAffinity : AnyThreadAffinity;
 };
 
 template<typename T, typename U, typename V>
@@ -1803,8 +1803,8 @@ struct ThreadingTrait<HeapHashTableBacking<Table> > {
     typedef typename Table::KeyType Key;
     typedef typename Table::ValueType Value;
     static const ThreadAffinity Affinity =
-        (ThreadingTrait<Key>::Affinity == MainThreadOnly)
-        && (ThreadingTrait<Value>::Affinity == MainThreadOnly) ? MainThreadOnly : AnyThread;
+        (ThreadingTrait<Key>::Affinity == MainThreadAffinity)
+        && (ThreadingTrait<Value>::Affinity == MainThreadAffinity) ? MainThreadAffinity : AnyThreadAffinity;
 };
 
 template<typename T, typename U, typename V, typename W, typename X>