Eliminate all UI thread decoding of extension images....

chrome/common/extensions/extension.cc

 // Copyright (c) 2010 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/common/extensions/extension.h"
 
 #include <algorithm>
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
@@ skipping 1466 matching lines @@
 ExtensionResource Extension::GetIconPath(Icons icon) {
   std::map<int, std::string>::const_iterator iter = icons_.find(icon);
   if (iter == icons_.end())
     return ExtensionResource();
   return GetResource(iter->second);
 }
 
 Extension::Icons Extension::GetIconPathAllowLargerSize(
     ExtensionResource* resource, Icons icon) {
   *resource = GetIconPath(icon);
-  if (!resource->GetFilePath().empty())
+  if (!resource->relative_path().empty())
     return icon;
   if (icon == EXTENSION_ICON_BITTY)
     return GetIconPathAllowLargerSize(resource, EXTENSION_ICON_SMALL);
   if (icon == EXTENSION_ICON_SMALL)
     return GetIconPathAllowLargerSize(resource, EXTENSION_ICON_MEDIUM);
   if (icon == EXTENSION_ICON_MEDIUM)
     return GetIconPathAllowLargerSize(resource, EXTENSION_ICON_LARGE);
   return EXTENSION_ICON_LARGE;
 }
 
@@ skipping 73 matching lines @@
         } else {
           return false;
         }
       } else {
         return true;
       }
     }
   }
   return false;
 }