Use high resolution icons where possible for streamlined hosted app icons.

chrome/browser/ui/gtk/browser_titlebar.cc

 // 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.
 
 #include "chrome/browser/ui/gtk/browser_titlebar.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 596 matching lines @@
   string16 title = browser_window_->browser()->GetWindowTitleForCurrentTab();
   gtk_label_set_text(GTK_LABEL(app_mode_title_), UTF16ToUTF8(title).c_str());
 
   if (browser_window_->browser()->is_app()) {
     switch (browser_window_->browser()->type()) {
       case Browser::TYPE_POPUP: {
         // Update the system app icon.  We don't need to update the icon in the
         // top left of the custom frame, that will get updated when the
         // throbber is updated.
         Profile* profile = browser_window_->browser()->profile();
-        gfx::Image icon = browser_window_->browser()->GetCurrentPageIcon();
-        if (icon.IsEmpty()) {
+        const gfx::Image* icon = browser_window_->browser()->GetCurrentPageIcon(
+            IconUtil::kMediumIconSize);
+        if (!icon || icon->IsEmpty()) {
           gtk_util::SetWindowIcon(window_, profile);
         } else {
-          gtk_util::SetWindowIcon(window_, profile, icon.ToGdkPixbuf());
+          gtk_util::SetWindowIcon(window_, profile, icon->ToGdkPixbuf());
         }
         break;
       }
       case Browser::TYPE_TABBED: {
         NOTREACHED() << "We should never have a tabbed app window.";
         break;
       }
     }
   }
 }
@@ skipping 464 matching lines @@
     ui::SimpleMenuModel::Delegate* delegate)
     : SimpleMenuModel(delegate) {
   AddItemWithStringId(IDC_NEW_TAB, IDS_TAB_CXMENU_NEWTAB);
   AddItemWithStringId(IDC_RESTORE_TAB, IDS_RESTORE_TAB);
   AddSeparator(ui::NORMAL_SEPARATOR);
   AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
   AddSeparator(ui::NORMAL_SEPARATOR);
   AddCheckItemWithStringId(kShowWindowDecorationsCommand,
                            IDS_SHOW_WINDOW_DECORATIONS_MENU);
 }