Load 16x16 icons for shelf.

chrome/browser/cocoa/download_item_mac.mm

 // Copyright (c) 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.
 
 #include "chrome/browser/cocoa/download_item_mac.h"
 
 #include "chrome/browser/browser_process.h"
 #import "chrome/browser/cocoa/download_item_controller.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "skia/ext/skia_utils_mac.h"
@@ skipping 52 matching lines @@
   // We may already have this particular image cached.
   FilePath file = download_model_->download()->full_path();
   SkBitmap* icon_bitmap = icon_manager->LookupIcon(file, IconLoader::SMALL);
   if (icon_bitmap) {
     NSImage* icon = gfx::SkBitmapToNSImage(*icon_bitmap);
     [item_controller_ setIcon:icon];
     return;
   }
 
   // The icon isn't cached, load it asynchronously.
-  icon_manager->LoadIcon(file, IconLoader::NORMAL, &icon_consumer_,
+  icon_manager->LoadIcon(file, IconLoader::SMALL, &icon_consumer_,
                          NewCallback(this,
                                      &DownloadItemMac::OnExtractIconComplete));
 }
 
 void DownloadItemMac::OnExtractIconComplete(IconManager::Handle handle,
                                             SkBitmap* icon_bitmap) {
   if (!icon_bitmap)
     return;
 
   NSImage* icon = gfx::SkBitmapToNSImage(*icon_bitmap);
   [item_controller_ setIcon:icon];
 }