Make search icon in omnibox results hidpi

chrome/browser/ui/gtk/omnibox/omnibox_popup_view_gtk.h

 // Copyright (c) 2012 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_UI_GTK_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_
 #define CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_
 
 #include <gtk/gtk.h>
 
 #include <map>
@@ skipping 64 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);
 
-  const gfx::Image* IconForMatch(const AutocompleteMatch& match,
-                                 bool selected,
-                                 bool is_selected_keyword);
+  gfx::Image IconForMatch(const AutocompleteMatch& match,
+                          bool selected,
+                          bool is_selected_keyword);
 
   // Returns the |index|th element of match, unless we're selected and showing
   // the associated keyword match.
   void GetVisibleMatchForInput(size_t index,
                                const AutocompleteMatch** match,
                                bool* is_selected_keyword);
 
   CHROMEGTK_CALLBACK_1(OmniboxPopupViewGtk, gboolean, HandleMotion,
                        GdkEventMotion*);
 
@@ skipping 17 matching lines @@
   // The pango layout object created from the window, cached across exposes.
   PangoLayout* layout_;
 
   GtkThemeService* theme_service_;
   content::NotificationRegistrar registrar_;
 
   // Font used for suggestions after being derived from the constructor's
   // |font|.
   gfx::Font font_;
 
-  // Used to cache GdkPixbufs and map them from the SkBitmaps they were created
-  // from.
-  typedef std::map<const SkBitmap*, gfx::Image*> ImageMap;
-  ImageMap images_;
-
   // 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 content_dim_text_color_;
   GdkColor selected_content_dim_text_color_;
   GdkColor url_text_color_;
   GdkColor url_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(OmniboxPopupViewGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_GTK_OMNIBOX_OMNIBOX_POPUP_VIEW_GTK_H_