Native context: alpha sort slots and remove boilerplate.

src/proxy.js

Index: src/proxy.js
diff --git a/src/proxy.js b/src/proxy.js
index 88b6a273bae424593767d72a0e2816b74dfa3de6..6f18609400b793eab3356eb1fc72ce21fccfb380 100644
--- a/src/proxy.js
+++ b/src/proxy.js
@@ -201,10 +201,10 @@ utils.Export(function(to) {
 });
 
 utils.ExportToRuntime(function(to) {
-  to.ProxyDerivedGetTrap = DerivedGetTrap;
-  to.ProxyDerivedHasTrap = DerivedHasTrap;
-  to.ProxyDerivedSetTrap = DerivedSetTrap;
-  to.ProxyEnumerate = ProxyEnumerate;
+  to["derived_get_trap"] = DerivedGetTrap;
+  to["derived_has_trap"] = DerivedHasTrap;
+  to["derived_set_trap"] = DerivedSetTrap;
+  to["proxy_enumerate"] = ProxyEnumerate;
 });
 
 })