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

chrome/renderer/plugins/chrome_plugin_placeholder.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 CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_
 #define CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_
 
 #include "components/plugins/renderer/loadable_plugin_placeholder.h"
 #include "content/public/renderer/context_menu_client.h"
 #include "content/public/renderer/render_process_observer.h"
@@ skipping 10 matching lines @@
   // The poster image specified in image 'srcset' attribute format.
   std::string poster_attribute;
 
   // Used to resolve relative paths in |poster_attribute|.
   GURL base_url;
 
   // Specify this to provide partially obscured plugins a centered poster image.
   gfx::Size custom_poster_size;
 };
 
-class ChromePluginPlaceholder : public plugins::LoadablePluginPlaceholder,
-                                public content::RenderProcessObserver,
-                                public content::ContextMenuClient {
+class ChromePluginPlaceholder final
+    : public plugins::LoadablePluginPlaceholder,
+      public content::RenderProcessObserver,
+      public content::ContextMenuClient,
+      public gin::Wrappable<ChromePluginPlaceholder> {
  public:
-  static const char kPluginPlaceholderDataURL[];
+  static gin::WrapperInfo kWrapperInfo;
 
   static ChromePluginPlaceholder* CreateBlockedPlugin(
       content::RenderFrame* render_frame,
       blink::WebLocalFrame* frame,
       const blink::WebPluginParams& params,
       const content::WebPluginInfo& info,
       const std::string& identifier,
       const base::string16& name,
       int resource_id,
       const base::string16& message,
       const PlaceholderPosterInfo& poster_info);
 
   // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
-  static ChromePluginPlaceholder* CreateMissingPlugin(
+  static ChromePluginPlaceholder* CreateLoadableMissingPlugin(
       content::RenderFrame* render_frame,
       blink::WebLocalFrame* frame,
       const blink::WebPluginParams& params);
 
-  static ChromePluginPlaceholder* CreateErrorPlugin(
-      content::RenderFrame* render_frame,
-      const base::FilePath& plugin_path);
-
   void SetStatus(ChromeViewHostMsg_GetPluginInfo_Status status);
 
 #if defined(ENABLE_PLUGIN_INSTALLATION)
   int32 CreateRoutingId();
 #endif
 
  private:
   ChromePluginPlaceholder(content::RenderFrame* render_frame,
                           blink::WebLocalFrame* frame,
                           const blink::WebPluginParams& params,
                           const std::string& html_data,
                           const base::string16& title);
   ~ChromePluginPlaceholder() override;
 
   // content::LoadablePluginPlaceholder method
   blink::WebPlugin* CreatePlugin() override;
 
   // gin::Wrappable (via PluginPlaceholder) method
   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
-      v8::Isolate* isolate) override;
+      v8::Isolate* isolate) final;
 
   // content::RenderViewObserver (via PluginPlaceholder) override:
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // WebViewPlugin::Delegate (via PluginPlaceholder) methods:
+  v8::Local<v8::Value> GetV8Handle(v8::Isolate* isolate) override;
   void ShowContextMenu(const blink::WebMouseEvent&) override;
 
   // content::RenderProcessObserver methods:
   void PluginListChanged() override;
 
   // content::ContextMenuClient methods:
   void OnMenuAction(int request_id, unsigned action) override;
   void OnMenuClosed(int request_id) override;
 
   // Javascript callbacks:
@@ skipping 21 matching lines @@
 #endif
 
   bool has_host_;
   int context_menu_request_id_;  // Nonzero when request pending.
   base::string16 plugin_name_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromePluginPlaceholder);
 };
 
 #endif  // CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_