Fix to make Chromium more verbose about component extension loading error

chrome/common/extensions/extension_file_util.cc

Index: chrome/common/extensions/extension_file_util.cc
diff --git a/chrome/common/extensions/extension_file_util.cc b/chrome/common/extensions/extension_file_util.cc
index a6a85c3b2499d57d6bdbbfbdb9058c71ca740c0f..227b5d588934c90fc06385f43084e83bf4146405 100644
--- a/chrome/common/extensions/extension_file_util.cc
+++ b/chrome/common/extensions/extension_file_util.cc
@@ -139,7 +139,7 @@ scoped_refptr<Extension> LoadExtension(const FilePath& extension_path,
   return extension;
 }
 
-bool ValidateExtension(Extension* extension, std::string* error) {
+bool ValidateExtension(const Extension* extension, std::string* error) {
   // Validate icons exist.
   for (ExtensionIconSet::IconMap::const_iterator iter =
            extension->icons().map().begin();