blink: Cleanup class/struct forward declarations

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

Index: third_party/WebKit/Source/platform/heap/GCInfo.h
diff --git a/third_party/WebKit/Source/platform/heap/GCInfo.h b/third_party/WebKit/Source/platform/heap/GCInfo.h
index 8440ada807aab1ad4b4cf8c7b571820b906b584c..8d4d50daf01e89e004fbebcaacedacbe2d36b6fd 100644
--- a/third_party/WebKit/Source/platform/heap/GCInfo.h
+++ b/third_party/WebKit/Source/platform/heap/GCInfo.h
@@ -135,10 +135,6 @@ struct FinalizerTrait<HeapVectorBacking<T, Traits>> {
   }
 };
 
-// s_gcInfoTable holds the per-class GCInfo descriptors; each heap
-// object header keeps its index into this table.
-extern PLATFORM_EXPORT GCInfo const** s_gcInfoTable;
-
 // GCInfo contains meta-data associated with objects allocated in the
 // Blink heap. This meta-data consists of a function pointer used to
 // trace the pointers in the object during garbage collection, an
@@ -156,6 +152,10 @@ struct GCInfo {
   bool m_hasVTable;
 };
 
+// s_gcInfoTable holds the per-class GCInfo descriptors; each heap
+// object header keeps its index into this table.
+extern PLATFORM_EXPORT GCInfo const** s_gcInfoTable;
+
 #if ENABLE(ASSERT)
 PLATFORM_EXPORT void assertObjectHasGCInfo(const void*, size_t gcInfoIndex);
 #endif