[Webview, Child Accounts] Automatically sign in to Chrome if needed.

chrome/browser/ui/webui/supervised_user_internals_message_handler.cc

 // Copyright 2015 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/ui/webui/supervised_user_internals_message_handler.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/macros.h"
@@ skipping 87 matching lines @@
     case supervised_user_error_page::DEFAULT:
       return "Default";
     case supervised_user_error_page::ASYNC_CHECKER:
       return "AsyncChecker";
     case supervised_user_error_page::BLACKLIST:
       return "Blacklist";
     case supervised_user_error_page::MANUAL:
       return "Manual";
     case supervised_user_error_page::WHITELIST:
       return "Whitelist";
+    case supervised_user_error_page::NOT_SIGNED_IN:
+      // Should never happen, only used for requests from WebView
+      NOTREACHED();
   }
   return "Unknown/invalid";
 }
 
 }  // namespace
 
 // Helper class that lives on the IO thread, listens to the
 // SupervisedUserURLFilter there, and posts results back to the UI thread.
 class SupervisedUserInternalsMessageHandler::IOThreadHelper
     : public base::RefCountedThreadSafe<IOThreadHelper,
@@ skipping 212 matching lines @@
     supervised_user_error_page::FilteringBehaviorReason reason,
     bool uncertain) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::DictionaryValue result;
   result.SetString("url", url.possibly_invalid_spec());
   result.SetString("result", FilteringBehaviorToString(behavior, uncertain));
   result.SetString("reason", FilteringBehaviorReasonToString(reason));
   web_ui()->CallJavascriptFunctionUnsafe(
       "chrome.supervised_user_internals.receiveFilteringResult", result);
 }