linux: only create browser-side plugin container after plugin requests it

webkit/tools/test_shell/test_webview_delegate.h

 // Copyright (c) 2006-2008 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.
 
 // TestWebViewDelegate class:
 // This class implements the WebViewDelegate methods for the test shell.  One
 // instance is owned by each TestShell.
 
 #ifndef WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_
 #define WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_
@@ skipping 71 matching lines @@
                                  bool user_gesture,
                                  const GURL& creator_url);
   virtual WebWidget* CreatePopupWidget(WebView* webview, bool activatable);
   virtual WebPluginDelegate* CreatePluginDelegate(
     WebView* webview,
     const GURL& url,
     const std::string& mime_type,
     const std::string& clsid,
     std::string* actual_mime_type);
 #if defined(OS_LINUX)
+  virtual gfx::PluginWindowHandle CreatePluginContainer();
   virtual void WillDestroyPluginWindow(gfx::PluginWindowHandle handle);
 #endif
   virtual WebKit::WebMediaPlayer* CreateWebMediaPlayer(
       WebKit::WebMediaPlayerClient* client);
   virtual WebKit::WebWorker* CreateWebWorker(WebKit::WebWorkerClient* client);
   virtual void OpenURL(WebView* webview,
                        const GURL& url,
                        const GURL& referrer,
                        WindowOpenDisposition disposition);
   virtual void RunJavaScriptAlert(WebFrame* webframe,
@@ skipping 264 matching lines @@
   // cursor.
   GdkCursorType cursor_type_;
 #endif
 
   CapturedContextMenuEvents captured_context_menu_events_;
 
   DISALLOW_COPY_AND_ASSIGN(TestWebViewDelegate);
 };
 
 #endif  // WEBKIT_TOOLS_TEST_SHELL_TEST_WEBVIEW_DELEGATE_H_