Blink Plugins: Remove Shadow DOM Plugin Placeholder

Source/core/plugins/testing/DictionaryPluginPlaceholder.h

Index: Source/core/plugins/testing/DictionaryPluginPlaceholder.h
diff --git a/Source/core/plugins/testing/DictionaryPluginPlaceholder.h b/Source/core/plugins/testing/DictionaryPluginPlaceholder.h
deleted file mode 100644
index 60ba5046ecb46d19f8f087ca7ff13a6df3a84050..0000000000000000000000000000000000000000
--- a/Source/core/plugins/testing/DictionaryPluginPlaceholder.h
+++ /dev/null
@@ -1,51 +0,0 @@
-// 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 DictionaryPluginPlaceholder_h
-#define DictionaryPluginPlaceholder_h
-
-#include "core/html/shadow/PluginPlaceholderElement.h"
-#include "core/plugins/PluginPlaceholder.h"
-#include "core/testing/PluginPlaceholderOptions.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-// Manipulates a plugin placeholder element based on a fixed dictionary given.
-// Used for layout tests that examine the formatting of structured placeholders.
-class DictionaryPluginPlaceholder : public NoBaseWillBeGarbageCollected<DictionaryPluginPlaceholder>, public PluginPlaceholder {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DictionaryPluginPlaceholder);
-public:
-    static PassOwnPtrWillBeRawPtr<DictionaryPluginPlaceholder> create(Document& document, const PluginPlaceholderOptions& options)
-    {
-        RefPtrWillBeRawPtr<PluginPlaceholderElement> placeholder = PluginPlaceholderElement::create(document);
-        if (options.hasMessage())
-            placeholder->setMessage(options.message());
-
-        if (options.hasCloseable())
-            placeholder->setIsCloseable(options.closeable());
-
-        return adoptPtrWillBeNoop(new DictionaryPluginPlaceholder(placeholder.release()));
-    }
-
-#if !ENABLE(OILPAN)
-    ~DictionaryPluginPlaceholder() override { }
-#endif
-    DEFINE_INLINE_VIRTUAL_TRACE() { visitor->trace(m_pluginPlaceholderElement); }
-
-    void loadIntoContainer(ContainerNode& container) override
-    {
-        container.removeChildren();
-        container.appendChild(m_pluginPlaceholderElement, ASSERT_NO_EXCEPTION);
-    }
-
-private:
-    DictionaryPluginPlaceholder(PassRefPtrWillBeRawPtr<PluginPlaceholderElement> element) : m_pluginPlaceholderElement(element) { }
-
-    RefPtrWillBeMember<PluginPlaceholderElement> m_pluginPlaceholderElement;
-};
-
-} // namespace blink
-
-#endif // DictionaryPluginPlaceholder_h