Change the ChromiumPasteboard to have a notion of an alternate clipboard...

chrome/browser/renderer_host/render_widget_host_view_gtk.h

 // Copyright (c) 2006-2009 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_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_
 
 #include <gdk/gdk.h>
 
 #include <map>
@@ skipping 43 matching lines @@
   virtual gfx::Rect GetViewBounds() const;
   virtual void UpdateCursor(const WebCursor& cursor);
   virtual void SetIsLoading(bool is_loading);
   virtual void IMEUpdateStatus(int control, const gfx::Rect& caret_rect);
   virtual void DidPaintRect(const gfx::Rect& rect);
   virtual void DidScrollRect(const gfx::Rect& rect, int dx, int dy);
   virtual void RenderViewGone();
   virtual void Destroy();
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual void SelectionChanged(const std::string& text);
-  virtual void PasteFromSelectionClipboard();
   virtual void ShowingContextMenu(bool showing);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id);
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id);
 
   gfx::NativeView native_view() const { return view_.get(); }
 
   void Paint(const gfx::Rect&);
 
  private:
   friend class RenderWidgetHostViewGtkWidget;
 
   // Update the display cursor for the render view.
   void ShowCurrentCursor();
 
-  // When we've requested the text from the X clipboard, GTK returns it to us
-  // through this callback.
-  static void ReceivedSelectionText(GtkClipboard* clipboard,
-                                    const gchar* text,
-                                    gpointer userdata);
-
   // The model object.
   RenderWidgetHost* const host_;
 
   // The native UI widget.
   OwnedWidgetGtk view_;
 
   // This is true when we are currently painting and thus should handle extra
   // paint requests by expanding the invalid rect rather than actually
   // painting.
   bool about_to_validate_and_paint_;
@@ skipping 27 matching lines @@
   bool was_focused_before_grab_;
 
   // A conveience wrapper object for GtkIMContext;
   scoped_ptr<GtkIMContextWrapper> im_context_;
 
   // Helper class that lets us allocate plugin containers and move them.
   GtkPluginContainerManager plugin_container_manager_;
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_