Plugin Placeholders: Refactor for platforms that don't support plugins

chrome/renderer/plugins/plugin_preroller.cc

 // Copyright 2015 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 "chrome/renderer/plugins/plugin_preroller.h"
 
 #include "base/base64.h"
 #include "chrome/grit/renderer_resources.h"
 #include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
@@ skipping 50 matching lines @@
   PlaceholderPosterInfo poster_info;
   poster_info.poster_attribute = keyframe_data_url_.spec();
   poster_info.custom_poster_size = throttler_->GetSize();
 
   ChromePluginPlaceholder* placeholder =
       ChromePluginPlaceholder::CreateBlockedPlugin(
           render_frame(), frame_, params_, info_, identifier_, name_,
           IDR_PLUGIN_POSTER_HTML, message_, poster_info);
   placeholder->SetPremadePlugin(throttler_);
   placeholder->set_power_saver_enabled(true);
-  placeholder->set_allow_loading(true);
 
   blink::WebPluginContainer* container =
       throttler_->GetWebPlugin()->container();
   container->setPlugin(placeholder->plugin());
 
   bool success = placeholder->plugin()->initialize(container);
   DCHECK(success);
 
   container->invalidate();
   container->reportGeometry();
 
   delete this;
 }
 
 void PluginPreroller::OnThrottlerDestroyed() {
   throttler_ = nullptr;
   delete this;
 }