Revert of Change extension icon load errors to warnings

chrome/common/extensions/api/extension_action/action_info.cc

Index: chrome/common/extensions/api/extension_action/action_info.cc
diff --git a/chrome/common/extensions/api/extension_action/action_info.cc b/chrome/common/extensions/api/extension_action/action_info.cc
index 8e68d32e4ea12007666e002d59ac742f2e504b94..9185d132f2474366e4c7fc9b61c8f94085597b56 100644
--- a/chrome/common/extensions/api/extension_action/action_info.cc
+++ b/chrome/common/extensions/api/extension_action/action_info.cc
@@ -52,7 +52,7 @@ ActionInfo::~ActionInfo() {
 }
 
 // static
-scoped_ptr<ActionInfo> ActionInfo::Load(Extension* extension,
+scoped_ptr<ActionInfo> ActionInfo::Load(const Extension* extension,
                                         const base::DictionaryValue* dict,
                                         base::string16* error) {
   scoped_ptr<ActionInfo> result(new ActionInfo());
@@ -92,7 +92,7 @@ scoped_ptr<ActionInfo> ActionInfo::Load(Extension* extension,
     std::string default_icon;
     if (dict->GetDictionary(keys::kPageActionDefaultIcon, &icons_value)) {
       if (!manifest_handler_helpers::LoadIconsFromDictionary(
-              extension, icons_value, &result->default_icon, error)) {
+              icons_value, &result->default_icon, error)) {
         return scoped_ptr<ActionInfo>();
       }
     } else if (dict->GetString(keys::kPageActionDefaultIcon, &default_icon) &&