BASELINE: Update Chromium to 67.0.3396.47

Change-Id: Idcb1341782e417561a2473eeecc82642dafda5b7
Reviewed-by: Michal Klocek <michal.klocek@qt.io>

1 files changed, 70 insertions, 0 deletions

diff --git a/chromium/third_party/blink/renderer/core/html/custom/custom_element_reaction_stack.h b/chromium/third_party/blink/renderer/core/html/custom/custom_element_reaction_stack.h
new file mode 100644
index 00000000000..119114068d9
--- /dev/null
+++ b/chromium/third_party/blink/renderer/core/html/custom/custom_element_reaction_stack.h
@@ -0,0 +1,70 @@
+// Copyright 2016 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 THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CUSTOM_ELEMENT_REACTION_STACK_H_
+#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CUSTOM_ELEMENT_REACTION_STACK_H_
+
+#include "base/macros.h"
+#include "third_party/blink/renderer/core/core_export.h"
+#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
+#include "third_party/blink/renderer/platform/heap/handle.h"
+
+namespace blink {
+
+class CustomElementReaction;
+class CustomElementReactionQueue;
+class Element;
+
+// https://html.spec.whatwg.org/multipage/scripting.html#custom-element-reactions
+class CORE_EXPORT CustomElementReactionStack final
+    : public GarbageCollected<CustomElementReactionStack>,
+      public TraceWrapperBase {
+ public:
+  CustomElementReactionStack();
+
+  void Trace(blink::Visitor*);
+  void TraceWrappers(const ScriptWrappableVisitor*) const override;
+  const char* NameInHeapSnapshot() const override {
+    return "CustomElementReactionStack";
+  }
+
+  void Push();
+  void PopInvokingReactions();
+  void EnqueueToCurrentQueue(Element*, CustomElementReaction*);
+  void EnqueueToBackupQueue(Element*, CustomElementReaction*);
+  void ClearQueue(Element*);
+
+  static CustomElementReactionStack& Current();
+
+ private:
+  friend class CustomElementReactionStackTestSupport;
+
+  using ElementReactionQueueMap =
+      HeapHashMap<TraceWrapperMember<Element>,
+                  Member<CustomElementReactionQueue>>;
+  ElementReactionQueueMap map_;
+
+  using ElementQueue = HeapVector<Member<Element>, 1>;
+  HeapVector<Member<ElementQueue>> stack_;
+  Member<ElementQueue> backup_queue_;
+
+  void InvokeBackupQueue();
+  void InvokeReactions(ElementQueue&);
+  void Enqueue(Member<ElementQueue>&, Element*, CustomElementReaction*);
+
+  DISALLOW_COPY_AND_ASSIGN(CustomElementReactionStack);
+};
+
+class CORE_EXPORT CustomElementReactionStackTestSupport final {
+ private:
+  friend class ResetCustomElementReactionStackForTest;
+
+  CustomElementReactionStackTestSupport() = delete;
+  static CustomElementReactionStack* SetCurrentForTest(
+      CustomElementReactionStack*);
+};
+
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CUSTOM_CUSTOM_ELEMENT_REACTION_STACK_H_