Enable shadow DOM-based "missing plugin" placeholder.

content/renderer/render_frame_impl.h

 // Copyright 2013 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 CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 264 matching lines @@
   ServiceRegistry* GetServiceRegistry() override;
   bool IsFTPDirectoryListing() override;
   void AttachGuest(int element_instance_id) override;
   void SetSelectedText(const base::string16& selection_text,
                        size_t offset,
                        const gfx::Range& range) override;
   void EnsureMojoBuiltinsAreAvailable(v8::Isolate* isolate,
                                       v8::Handle<v8::Context> context) override;
 
   // blink::WebFrameClient implementation:
+  virtual blink::WebPluginPlaceholder* createPluginPlaceholder(
+      blink::WebLocalFrame*,
+      const blink::WebPluginParams&) override;
   virtual blink::WebPlugin* createPlugin(blink::WebLocalFrame* frame,
                                          const blink::WebPluginParams& params);
   // TODO(jrummell): Remove this method once blink updated.
   virtual blink::WebMediaPlayer* createMediaPlayer(
       blink::WebLocalFrame* frame,
       const blink::WebURL& url,
       blink::WebMediaPlayerClient* client);
   virtual blink::WebMediaPlayer* createMediaPlayer(
       blink::WebLocalFrame* frame,
       const blink::WebURL& url,
@@ skipping 485 matching lines @@
 #endif
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_