Enable shadow DOM-based "missing plugin" placeholder.

content/renderer/render_frame_impl.cc

 // 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.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 1587 matching lines @@
                              mojo::js::Support::kModuleName,
                              mojo::js::Support::GetModule(isolate));
   registry->AddBuiltinModule(
       isolate,
       ServiceRegistryJsWrapper::kModuleName,
       ServiceRegistryJsWrapper::Create(isolate, &service_registry_).ToV8());
 }
 
 // blink::WebFrameClient implementation ----------------------------------------
 
+blink::WebPluginPlaceholder* RenderFrameImpl::createPluginPlaceholder(
+    blink::WebLocalFrame* frame,
+    const blink::WebPluginParams& params) {
+  DCHECK_EQ(frame_, frame);
+  return GetContentClient()->renderer()->OverrideCreatePluginPlaceholder(
+      this, frame, params);
+}
+
 blink::WebPlugin* RenderFrameImpl::createPlugin(
     blink::WebLocalFrame* frame,
     const blink::WebPluginParams& params) {
   DCHECK_EQ(frame_, frame);
   blink::WebPlugin* plugin = NULL;
   if (GetContentClient()->renderer()->OverrideCreatePlugin(
           this, frame, params, &plugin)) {
     return plugin;
   }
 
@@ skipping 2490 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content