Oilpan: Factor out GC-related enum definitions to BlinkGC.h

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

Index: third_party/WebKit/Source/platform/heap/HeapAllocator.h
diff --git a/third_party/WebKit/Source/platform/heap/HeapAllocator.h b/third_party/WebKit/Source/platform/heap/HeapAllocator.h
index ece36a275040a73106fe8af48d2de4ae2de2c1a8..5765214296e090bfae4cc373f365894a35b0620c 100644
--- a/third_party/WebKit/Source/platform/heap/HeapAllocator.h
+++ b/third_party/WebKit/Source/platform/heap/HeapAllocator.h
@@ -60,7 +60,7 @@ public:
     {
         size_t gcInfoIndex = GCInfoTrait<HeapVectorBacking<T, VectorTraits<T>>>::index();
         ThreadState* state = ThreadStateFor<ThreadingTrait<T>::Affinity>::state();
-        return reinterpret_cast<T*>(Heap::allocateOnHeapIndex(state, size, ThreadState::InlineVectorHeapIndex, gcInfoIndex));
+        return reinterpret_cast<T*>(Heap::allocateOnHeapIndex(state, size, BlinkGC::InlineVectorHeapIndex, gcInfoIndex));
     }
     static void freeInlineVectorBacking(void*);
     static bool expandInlineVectorBacking(void*, size_t);
@@ -71,7 +71,7 @@ public:
     {
         size_t gcInfoIndex = GCInfoTrait<HeapHashTableBacking<HashTable>>::index();
         ThreadState* state = ThreadStateFor<ThreadingTrait<T>::Affinity>::state();
-        return reinterpret_cast<T*>(Heap::allocateOnHeapIndex(state, size, ThreadState::HashTableHeapIndex, gcInfoIndex));
+        return reinterpret_cast<T*>(Heap::allocateOnHeapIndex(state, size, BlinkGC::HashTableHeapIndex, gcInfoIndex));
     }
     template <typename T, typename HashTable>
     static T* allocateZeroedHashTableBacking(size_t size)