Implement contextmenu attribute with basic support of <menu>

Source/core/html/CustomContextMenuProvider.h

Index: Source/core/html/CustomContextMenuProvider.h
diff --git a/Source/core/html/CustomContextMenuProvider.h b/Source/core/html/CustomContextMenuProvider.h
new file mode 100644
index 0000000000000000000000000000000000000000..da68abd57c6c9440aa4bb8a007b1e91e6e6957be
--- /dev/null
+++ b/Source/core/html/CustomContextMenuProvider.h
@@ -0,0 +1,41 @@
+// Copyright 2014 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 CustomContextMenuProvider_h
+#define CustomContextMenuProvider_h
+
+#include "core/page/ContextMenuProvider.h"
+#include "platform/ContextMenuItem.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class ContextMenu;
+class HTMLMenuElement;
+
+class CustomContextMenuProvider FINAL : public ContextMenuProvider {
+public:
+    static PassRefPtrWillBeRawPtr<CustomContextMenuProvider> create(HTMLMenuElement* menu, const Vector<ContextMenuItem>& items)

[tkent, 2014/07/25 04:42:38]

PassRefPtrWIllBeRawPtr -> PassRefPtr
because ContextMenuProvider is not garbage-collected.

The first argument should be HTMLMenuElement&.

[pals, 2014/07/30 09:47:43]

Done.

+    {
+        return adoptRefWillBeNoop(new CustomContextMenuProvider(menu, items));

[tkent, 2014/07/25 04:42:38]

adoptRefWIllBeNoop -> adoptRef

[pals, 2014/07/30 09:47:43]

Done.

+    }
+
+private:
+    CustomContextMenuProvider(HTMLMenuElement* menu, const Vector<ContextMenuItem>& items);

[tkent, 2014/07/25 04:42:37]

The first argument should be HTMLMenuElement&.

[pals, 2014/07/30 09:47:43]

Changed to PassRefPtr.

+

[tkent, 2014/07/25 04:42:37]

nit: Need no blank line

[pals, 2014/07/30 09:47:43]

Done.

+    virtual ~CustomContextMenuProvider();
+
+    virtual void populateContextMenu(ContextMenu*) OVERRIDE;
+

[tkent, 2014/07/25 04:42:37]

nit: Need no blank line

[pals, 2014/07/30 09:47:43]

Done.

+    virtual void contextMenuItemSelected(const ContextMenuItem*) OVERRIDE;
+

[tkent, 2014/07/25 04:42:37]

nit: Need no blank line

[pals, 2014/07/30 09:47:43]

Done.

+    virtual void contextMenuCleared() OVERRIDE { }
+
+    RefPtrWillBeMember<HTMLMenuElement> m_menu;

[tkent, 2014/07/25 04:42:38]

RefPtrWillBeMember -> RefPtrWillBePersistent

[pals, 2014/07/30 09:47:43]

Done.

+    Vector<ContextMenuItem> m_items;
+};
+
+} // namespace blink
+
+#endif