Check that classes with non-trivial destructors have finalization support.

tools/clang/blink_gc_plugin/Config.h

Index: tools/clang/blink_gc_plugin/Config.h
diff --git a/tools/clang/blink_gc_plugin/Config.h b/tools/clang/blink_gc_plugin/Config.h
index 71b82ca43665f299f9a588a8ce0391552a037da2..c109a12a6406d7e3e4534a8a2ad00553afabeba3 100644
--- a/tools/clang/blink_gc_plugin/Config.h
+++ b/tools/clang/blink_gc_plugin/Config.h
@@ -73,6 +73,12 @@ class Config {
            IsPersistentGCCollection(name);
   }
 
+  static bool IsVector(const std::string& name) {
+    return name == "Vector" ||
+           name == "HeapVector" ||
+           name == "PersistentHeapVector";
+  }
+
   static bool IsHashMap(const std::string& name) {
     return name == "HashMap" ||
            name == "HeapHashMap" ||
@@ -90,13 +96,13 @@ class Config {
 
   static bool IsGCFinalizedBase(const std::string& name) {
     return name == "GarbageCollectedFinalized" ||
-           name == "RefCountedGarbageCollected";
+           name == "RefCountedGarbageCollected" ||
+           IsGCMixinBase(name);;
   }
 
   static bool IsGCBase(const std::string& name) {
     return name == "GarbageCollected" ||
-           IsGCFinalizedBase(name) ||
-           IsGCMixinBase(name);
+           IsGCFinalizedBase(name);
   }
 
   static bool IsVisitor(const std::string& name) { return name == "Visitor"; }