Add support for multiple icon sizes for Mac platform apps

chrome/browser/ui/views/aura/launcher/chrome_launcher_delegate.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/views/aura/launcher/chrome_launcher_delegate.h"
 
 #include "ash/launcher/launcher_model.h"
 #include "ash/launcher/launcher_types.h"
 #include "ash/wm/window_util.h"
 #include "base/command_line.h"
@@ skipping 333 matching lines @@
     ash::LauncherID id) {
   DCHECK(id_to_item_map_.find(id) != id_to_item_map_.end());
   return id_to_item_map_[id].app_type;
 }
 
 std::string ChromeLauncherDelegate::GetAppID(TabContentsWrapper* tab) {
   return app_icon_loader_->GetAppID(tab);
 }
 
 void ChromeLauncherDelegate::SetAppImage(const std::string& id,
-                                         SkBitmap* image) {
+                                         const SkBitmap* image) {
   for (IDToItemMap::const_iterator i = id_to_item_map_.begin();
        i != id_to_item_map_.end(); ++i) {
     if (i->second.app_id == id) {
       int index = model_->ItemIndexByID(i->first);
       ash::LauncherItem item = model_->items()[index];
       item.image = image ? *image : Extension::GetDefaultIcon(true);
       model_->Set(index, item);
       // It's possible we're waiting on more than one item, so don't break.
     }
   }
@@ skipping 105 matching lines @@
 Profile* ChromeLauncherDelegate::GetProfileForNewWindows() {
   Profile* profile = ProfileManager::GetDefaultProfile();
   if (browser_defaults::kAlwaysOpenIncognitoWindow &&
       IncognitoModePrefs::ShouldLaunchIncognito(
           *CommandLine::ForCurrentProcess(),
           profile->GetPrefs())) {
     profile = profile->GetOffTheRecordProfile();
   }
   return profile;
 }