[Extensions] Make feature-related singletons leaky

extensions/common/extension_api.cc

Index: extensions/common/extension_api.cc
diff --git a/extensions/common/extension_api.cc b/extensions/common/extension_api.cc
index 93130c2bcdfb6a1185ebe3dcbc7cd132773fb5b4..9a0801e018f757713ba9603f58d8f35b09fcace1 100644
--- a/extensions/common/extension_api.cc
+++ b/extensions/common/extension_api.cc
@@ -99,7 +99,7 @@ struct Static {
   std::unique_ptr<ExtensionAPI> api;
 };
 
-base::LazyInstance<Static> g_lazy_instance = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<Static>::Leaky g_lazy_instance = LAZY_INSTANCE_INITIALIZER;
 
 // May override |g_lazy_instance| for a test.
 ExtensionAPI* g_shared_instance_for_test = NULL;