Improve settings override bubble to indicate policy installed extensions

chrome/browser/extensions/suspicious_extension_bubble_delegate.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/suspicious_extension_bubble_delegate.h"
 
 #include "base/lazy_instance.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 115 matching lines @@
     ExtensionMessageBubbleController::BubbleAction action) {
   UMA_HISTOGRAM_ENUMERATION(
       "ExtensionBubble.WipeoutUserSelection",
       action, ExtensionMessageBubbleController::ACTION_BOUNDARY);
 }
 
 const char* SuspiciousExtensionBubbleDelegate::GetKey() {
   return "SuspiciousExtensionBubbleDelegate";
 }
 
+bool SuspiciousExtensionBubbleDelegate::SupportsPolicyIndicator() {
+  return false;
+}
+
 }  // namespace extensions