crbug.com/124865 - DCHECK failure when pinning Chrome Web Store to Launcher

chrome/browser/ui/views/ash/launcher/launcher_app_icon_loader.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/ash/launcher/launcher_app_icon_loader.h"
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/common/extensions/extension.h"
@@ skipping 27 matching lines @@
     if (i->second == id)
       return;  // Already loading the image.
   }
 
   const extensions::Extension* extension = GetExtensionByID(profile_, id);
   if (!extension)
     return;
   if (!image_loader_.get())
     image_loader_.reset(new ImageLoadingTracker(this));
   map_[image_loader_->next_id()] = id;
+  ExtensionResource extensionResource =

[Aaron Boodman, 2012/08/06 03:09:34]

extension_resource

[sschmitz, 2012/08/07 17:59:00]

Done.

+      extension->GetIconResource(ExtensionIconSet::EXTENSION_ICON_SMALL,
+                                 ExtensionIconSet::MATCH_BIGGER);
   image_loader_->LoadImage(
       extension,
-      extension->GetIconResource(ExtensionIconSet::EXTENSION_ICON_SMALL,
-                                 ExtensionIconSet::MATCH_BIGGER),
+      extensionResource,
       gfx::Size(ExtensionIconSet::EXTENSION_ICON_SMALL,
                 ExtensionIconSet::EXTENSION_ICON_SMALL),
-      ImageLoadingTracker::CACHE);
+      extensionResource.empty() ? ImageLoadingTracker::DONT_CACHE :
+                                  ImageLoadingTracker::CACHE);
 }
 
 void LauncherAppIconLoader::OnImageLoaded(const gfx::Image& image,
                                           const std::string& extension_id,
                                           int index) {
   ImageLoaderIDToExtensionIDMap::iterator i = map_.find(index);
   if (i == map_.end())
     return;  // The tab has since been removed, do nothing.
 
   std::string id = i->second;
   map_.erase(i);
   if (image.IsEmpty())
     host_->SetAppImage(id, extensions::Extension::GetDefaultIcon(true));
   else
     host_->SetAppImage(id, *image.ToImageSkia());
 }