Attached data cleanup.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index 485eb6be7af64b6c48c0f2856f161158fd63c07e..d74a8cd73e2ba10b5fefe5ebdd0e81a4be33adfe 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -2497,11 +2497,6 @@ void ExtensionService::SetHasUsedWebRequest(const Extension* extension,
   extension_runtime_data_[extension->id()].has_used_webrequest = value;
 }
 
-base::PropertyBag* ExtensionService::GetPropertyBag(
-    const Extension* extension) {
-  return &extension_runtime_data_[extension->id()].property_bag;
-}
-
 void ExtensionService::RegisterNaClModule(const GURL& url,
                                           const std::string& mime_type) {
   NaClModuleInfo info;