Use the extension icon for extension omnibox results instead of the generic

chrome/browser/autocomplete/autocomplete_popup_view_gtk.h

 // Copyright (c) 2010 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_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_GTK_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_GTK_H_
 
 #include <gtk/gtk.h>
+#include <map>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
 #include "chrome/browser/autocomplete/autocomplete_popup_view.h"
 #include "chrome/common/notification_observer.h"
 #include "chrome/common/notification_registrar.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class AutocompleteEditModel;
 class AutocompleteEditView;
+class AutocompleteMatch;
 class AutocompletePopupModel;
 class GtkThemeProvider;
 class Profile;
 class SkBitmap;
 
 class AutocompletePopupViewGtk : public AutocompletePopupView,
                                  public NotificationObserver {
  public:
   AutocompletePopupViewGtk(AutocompleteEditView* edit_view,
                            AutocompleteEditModel* edit_model,
@@ skipping 20 matching lines @@
 
   // Restack the popup window directly above the browser's toplevel window.
   void StackWindow();
 
   // Convert a y-coordinate to the closest line / result.
   size_t LineFromY(int y);
 
   // Accept a line of the results, for example, when the user clicks a line.
   void AcceptLine(size_t line, WindowOpenDisposition disposition);
 
+  GdkPixbuf* IconForMatch(const AutocompleteMatch& match, bool selected);
+
   static gboolean HandleExposeThunk(GtkWidget* widget, GdkEventExpose* event,
                                     gpointer userdata) {
     return reinterpret_cast<AutocompletePopupViewGtk*>(userdata)->
         HandleExpose(widget, event);
   }
   gboolean HandleExpose(GtkWidget* widget, GdkEventExpose* event);
 
   static gboolean HandleMotionThunk(GtkWidget* widget, GdkEventMotion* event,
                                     gpointer userdata) {
     return reinterpret_cast<AutocompletePopupViewGtk*>(userdata)->
@@ skipping 23 matching lines @@
 
   // Our popup window, which is the only widget used, and we paint it on our
   // own.  This widget shouldn't be exposed outside of this class.
   GtkWidget* window_;
   // The pango layout object created from the window, cached across exposes.
   PangoLayout* layout_;
 
   GtkThemeProvider* theme_provider_;
   NotificationRegistrar registrar_;
 
+  // Used to cache GdkPixbufs and map them from the SkBitmaps they were created
+  // from.
+  typedef std::map<const SkBitmap*, GdkPixbuf*> PixbufMap;
+  PixbufMap pixbufs_;
+
   // A list of colors which we should use for drawing the popup. These change
   // between gtk and normal mode.
   GdkColor border_color_;
   GdkColor background_color_;
   GdkColor selected_background_color_;
   GdkColor hovered_background_color_;
   GdkColor content_text_color_;
   GdkColor selected_content_text_color_;
   GdkColor url_text_color_;
   GdkColor url_selected_text_color_;
   GdkColor description_text_color_;
   GdkColor description_selected_text_color_;
 
   // If the user cancels a dragging action (i.e. by pressing ESC), we don't have
   // a convenient way to release mouse capture. Instead we use this flag to
   // simply ignore all remaining drag events, and the eventual mouse release
   // event. Since OnDragCanceled() can be called when we're not dragging, this
   // flag is reset to false on a mouse pressed event, to make sure we don't
   // erroneously ignore the next drag.
   bool ignore_mouse_drag_;
 
   // Whether our popup is currently open / shown, or closed / hidden.
   bool opened_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupViewGtk);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_GTK_H_