blink_gc_plugin: detect singletons with embedded ScriptWrappables.

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 220a6d3b3138f25625aac0c6a285079f11727058..f207e16f1db8ff9d0e79759a5fbcdd3e28da8ab2 100644
--- a/tools/clang/blink_gc_plugin/RecordInfo.h
+++ b/tools/clang/blink_gc_plugin/RecordInfo.h
@@ -118,6 +118,16 @@ class RecordInfo {
 
   static clang::CXXRecordDecl* GetDependentTemplatedDecl(const clang::Type&);
 
+  // If |RecordInfo| represents blink::(CrossThread)Persistent<T>, return
+  // its type. |is_persistent| is set to |true| if the base type name is

[dcheng, 2017/02/16 04:35:51]

Make this match the actual param name? =)

[sof, 2017/02/16 06:45:34]

Updated to use version N naming, not (N-1). :)

+  // |Persistent| (or |CrossThreadPersistent|.)
+  const clang::Type* GetPersistentArgumentType(bool& has_persistent_name);
+
+  RecordCache* cache() const { return cache_; }
+
+  // Returns |true| if type is declared in "blink::"
+  bool IsInBlinkNamespace();
+
  private:
   RecordInfo(clang::CXXRecordDecl* record, RecordCache* cache);