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

webkit/glue/webplugin.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.
 
 #ifndef WEBKIT_GLUE_WEBPLUGIN_H__
 #define WEBKIT_GLUE_WEBPLUGIN_H__
 
 #include <string>
 #include <vector>
 
@@ skipping 34 matching lines @@
   GENERAL_FAILURE
 };
 
 // The WebKit side of a plugin implementation.  It provides wrappers around
 // operations that need to interact with the frame and other WebCore objects.
 class WebPlugin {
  public:
   WebPlugin() { }
   virtual ~WebPlugin() { }
 
+#if defined(OS_LINUX)
+  // Called by the plugin delegate to request a container for a new
+  // windowed plugin.  This handle will later get destroyed with
+  // WillDestroyWindow.
+  virtual gfx::PluginWindowHandle CreatePluginContainer() = 0;
+#endif
+
   // Called by the plugin delegate to let the WebPlugin know if the plugin is
   // windowed (i.e. handle is not NULL) or windowless (handle is NULL).  This
   // tells the WebPlugin to send mouse/keyboard events to the plugin delegate,
   // as well as the information about the HDC for paint operations.
   virtual void SetWindow(gfx::PluginWindowHandle window) = 0;
 
   // Called by the plugin delegate to let it know that the window is being
   // destroyed.
   virtual void WillDestroyWindow(gfx::PluginWindowHandle window) = 0;
 #if defined(OS_WIN)
@@ skipping 78 matching lines @@
                                   bool* cancel) = 0;
   virtual void DidReceiveData(const char* buffer, int length,
                               int data_offset) = 0;
   virtual void DidFinishLoading() = 0;
   virtual void DidFail() = 0;
   virtual bool IsMultiByteResponseExpected() = 0;
 };
 
 
 #endif  // #ifndef WEBKIT_GLUE_WEBPLUGIN_H__