Blink GC plugin: improve handling of type dependent bases.

tools/clang/blink_gc_plugin/RecordInfo.h

Index: tools/clang/blink_gc_plugin/RecordInfo.h
diff --git a/tools/clang/blink_gc_plugin/RecordInfo.h b/tools/clang/blink_gc_plugin/RecordInfo.h
index 7dd9a4eed52c5711460600718ef322e302c3d48e..d04ce9cd2c2e54421610e1dbe74d847e37865dce 100644
--- a/tools/clang/blink_gc_plugin/RecordInfo.h
+++ b/tools/clang/blink_gc_plugin/RecordInfo.h
@@ -100,9 +100,13 @@ class RecordInfo {
   clang::CXXMethodDecl* InheritsNonVirtualTrace();
   bool IsConsideredAbstract();
 
+  static clang::CXXRecordDecl* GetDependentTemplatedDecl(const clang::Type&);
+
  private:
   RecordInfo(clang::CXXRecordDecl* record, RecordCache* cache);
 
+  void walkBases();
+
   Fields* CollectFields();
   Bases* CollectBases();
   void DetermineTracingMethods();
@@ -129,7 +133,8 @@ class RecordInfo {
   clang::CXXMethodDecl* finalize_dispatch_method_;
 
   bool is_gc_derived_;
-  clang::CXXBasePaths* base_paths_;
+
+  std::vector<std::string> gc_base_names_;
 
   friend class RecordCache;
 };