Update monet.

tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h

Index: tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h
diff --git a/tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h b/tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h
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index 0000000000000000000000000000000000000000..b3cede16f9109ad7cd2554cd6be228b4c786804b
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+++ b/tools/clang/blink_gc_plugin/CheckGCRootsVisitor.h
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+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
+#define TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_
+
+#include <set>
+#include <vector>
+
+#include "Edge.h"
+#include "RecordInfo.h"
+
+// This visitor checks that the fields of a class and the fields of
+// its part objects don't define GC roots.
+class CheckGCRootsVisitor : public RecursiveEdgeVisitor {
+ public:
+  typedef std::vector<FieldPoint*> RootPath;
+  typedef std::set<RecordInfo*> VisitingSet;
+  typedef std::vector<RootPath> Errors;
+
+  CheckGCRootsVisitor();
+
+  Errors& gc_roots();
+
+  bool ContainsGCRoots(RecordInfo* info);
+
+  void VisitValue(Value* edge) override;
+  void VisitPersistent(Persistent* edge) override;
+  void AtCollection(Collection* edge) override;
+
+ private:
+  RootPath current_;
+  VisitingSet visiting_set_;
+  Errors gc_roots_;
+};
+
+#endif  // TOOLS_BLINK_GC_PLUGIN_CHECK_GC_ROOTS_VISITOR_H_