Move renderer plugin code into a new component (re-land)

chrome/renderer/plugins/chrome_plugin_placeholder.h

Index: chrome/renderer/plugins/chrome_plugin_placeholder.h
diff --git a/chrome/renderer/plugins/chrome_plugin_placeholder.h b/chrome/renderer/plugins/chrome_plugin_placeholder.h
new file mode 100644
index 0000000000000000000000000000000000000000..fefab1bfd7c9693f25a177d6f0f6df9eb96cc377
--- /dev/null
+++ b/chrome/renderer/plugins/chrome_plugin_placeholder.h
@@ -0,0 +1,103 @@
+// 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/plugin_placeholder.h"
+
+struct ChromeViewHostMsg_GetPluginInfo_Status;
+
+class ChromePluginPlaceholder : public plugins::PluginPlaceholder,
+                                public content::RenderProcessObserver,
+                                public content::ContextMenuClient {
+ public:
+  static const char kPluginPlaceholderDataURL[];
+
+  static ChromePluginPlaceholder* CreateBlockedPlugin(
+      content::RenderView* render_view,
+      WebKit::WebFrame* frame,
+      const WebKit::WebPluginParams& params,
+      const content::WebPluginInfo& info,
+      const std::string& identifier,
+      const string16& name,
+      int resource_id,
+      const string16& message);
+
+  // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
+  static ChromePluginPlaceholder* CreateMissingPlugin(
+      content::RenderView* render_view,
+      WebKit::WebFrame* frame,
+      const WebKit::WebPluginParams& params);
+
+  static ChromePluginPlaceholder* CreateErrorPlugin(
+      content::RenderView* render_view,
+      const base::FilePath& plugin_path);
+
+  void SetStatus(const ChromeViewHostMsg_GetPluginInfo_Status& status);
+
+#if defined(ENABLE_PLUGIN_INSTALLATION)
+  int32 CreateRoutingId();
+#endif
+
+ private:
+  ChromePluginPlaceholder(content::RenderView* render_view,
+                          WebKit::WebFrame* frame,
+                          const WebKit::WebPluginParams& params,
+                          const std::string& html_data,
+                          const string16& title);
+  virtual ~ChromePluginPlaceholder();
+
+  // WebViewPlugin::Delegate (via PluginPlaceholder) method
+  virtual void BindWebFrame(WebKit::WebFrame* frame) OVERRIDE;
+
+  // content::RenderViewObserver (via PluginPlaceholder) override:
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // WebViewPlugin::Delegate (via PluginPlaceholder) methods:
+  virtual void ShowContextMenu(const WebKit::WebMouseEvent&) OVERRIDE;
+
+  // content::RenderProcessObserver methods:
+  virtual void PluginListChanged() OVERRIDE;
+
+  // content::ContextMenuClient methods:
+  virtual void OnMenuAction(int request_id, unsigned action) OVERRIDE;
+  virtual void OnMenuClosed(int request_id) OVERRIDE;
+
+  // Javascript callback opens chrome://plugins in a new tab.
+  // Arguments are required by the caller, but not used.
+  void OpenAboutPluginsCallback(const webkit_glue::CppArgumentList& args,
+                                webkit_glue::CppVariant* result);
+
+  void OnLoadBlockedPlugins(const std::string& identifier);
+  void OnSetIsPrerendering(bool is_prerendering);
+#if defined(ENABLE_PLUGIN_INSTALLATION)
+  void OnDidNotFindMissingPlugin();
+  void OnFoundMissingPlugin(const string16& plugin_name);
+  void OnStartedDownloadingPlugin();
+  void OnFinishedDownloadingPlugin();
+  void OnErrorDownloadingPlugin(const std::string& error);
+  void OnCancelledDownloadingPlugin();
+#endif
+
+  // We use a scoped_ptr so we can forward-declare the struct; it's defined in
+  // an IPC message file which can't be easily included in other header files.
+  scoped_ptr<ChromeViewHostMsg_GetPluginInfo_Status> status_;
+
+  string16 title_;
+
+#if defined(ENABLE_PLUGIN_INSTALLATION)
+  // |routing_id()| is the routing ID of our associated RenderView, but we have
+  // a separate routing ID for messages specific to this placeholder.
+  int32 placeholder_routing_id_;
+#endif
+
+  bool has_host_;
+  int context_menu_request_id_;  // Nonzero when request pending.
+  string16 plugin_name_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromePluginPlaceholder);
+};
+
+#endif  // CHROME_RENDERER_PLUGINS_CHROME_PLUGIN_PLACEHOLDER_H_