Move blink::PluginData, blink::PluginInfo, blink::MimeTypeInfo to oilpan heap.

third_party/WebKit/Source/modules/plugins/DOMPlugin.h

 /*
     Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 11 matching lines @@
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "modules/plugins/DOMMimeType.h"
 #include "platform/bindings/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "platform/wtf/Forward.h"
 #include "platform/wtf/RefPtr.h"
 
 namespace blink {
 
-class PluginData;
-
 class DOMPlugin final : public GarbageCollectedFinalized<DOMPlugin>,
                         public ScriptWrappable,
                         public ContextClient {
   USING_GARBAGE_COLLECTED_MIXIN(DOMPlugin);
   DEFINE_WRAPPERTYPEINFO();
 
  public:
-  static DOMPlugin* Create(PluginData* plugin_data,
-                           LocalFrame* frame,
-                           unsigned index) {
-    return new DOMPlugin(plugin_data, frame, index);
+  static DOMPlugin* Create(LocalFrame* frame, const PluginInfo* plugin_info) {

[tkent, 2017/05/25 00:10:32]

Make the second argument |const PluginInfo&| to ensure it can't be nullptr.

[lfg, 2017/05/25 01:42:40]

Done.

+    return new DOMPlugin(frame, plugin_info);
   }
   virtual ~DOMPlugin();
 
   String name() const;
   String filename() const;
   String description() const;
 
   unsigned length() const;
 
   DOMMimeType* item(unsigned index);
   DOMMimeType* namedItem(const AtomicString& property_name);
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
-  DOMPlugin(PluginData*, LocalFrame*, unsigned index);
+  explicit DOMPlugin(LocalFrame*, const PluginInfo*);

[tkent, 2017/05/25 00:10:32]

Do not add |explicit|.
Make the second argument |const PluginInfo&| to ensure it can't be nullptr.

[lfg, 2017/05/25 01:42:40]

Done.

 
-  const PluginInfo& GetPluginInfo() const {
-    return plugin_data_->Plugins()[index_];
-  }
-
-  RefPtr<PluginData> plugin_data_;
-  unsigned index_;
+  Member<const PluginInfo> plugin_info_;
 };
 
 }  // namespace blink
 
 #endif  // DOMPlugin_h