Remove PermissionsData::ForExtension() completely

extensions/common/permissions/permissions_data.cc

Index: extensions/common/permissions/permissions_data.cc
diff --git a/extensions/common/permissions/permissions_data.cc b/extensions/common/permissions/permissions_data.cc
index 12dfaa6619cea2a8e81175509979366e67a53434..a6248260468da42a105096b639d9949b51d122fc 100644
--- a/extensions/common/permissions/permissions_data.cc
+++ b/extensions/common/permissions/permissions_data.cc
@@ -53,14 +53,6 @@ void PermissionsData::SetPolicyDelegate(PolicyDelegate* delegate) {
 }
 
 // static
-const PermissionsData* PermissionsData::ForExtension(
-    const Extension* extension) {
-  // TODO(rdevlin.cronin): Figure out what we're doing with this (i.e. whether
-  // or not we want to expose PermissionsData on the extension).
-  return extension->permissions_data();
-}
-
-// static
 bool PermissionsData::CanSilentlyIncreasePermissions(
     const Extension* extension) {
   return extension->location() != Manifest::INTERNAL;