Supervised Users should always need custodian approval for permission increase.
Remove the field trial SupervisedUserExtensionPermissionIncrease

BUG=652235

Review-Url: https://codereview.chromium.org/2396903002
Cr-Commit-Position: refs/heads/master@{#423497}
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index a0a25a2..72b61fc 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -1686,11 +1686,8 @@
 
 #if defined(ENABLE_SUPERVISED_USERS)
     // If a custodian-installed extension is disabled for a supervised user due
-    // to a permissions increase, send a request to the custodian if the
-    // supervised user themselves can't re-enable the extension.
+    // to a permissions increase, send a request to the custodian.
     if (extensions::util::IsExtensionSupervised(extension, profile_) &&
-        extensions::util::NeedCustodianApprovalForPermissionIncrease(
-            profile_) &&
         !ExtensionSyncService::Get(profile_)->HasPendingReenable(
             extension->id(), *extension->version())) {
       SupervisedUserService* supervised_user_service =