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

chrome/browser/supervised_user/supervised_user_content_provider_android.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/supervised_user/supervised_user_content_provider_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 52 matching lines @@
 }
 
 SupervisedUserContentProvider::~SupervisedUserContentProvider() {}
 
 void SupervisedUserContentProvider::ShouldProceed(
     JNIEnv* env,
     const JavaParamRef<jobject>& caller,
     const JavaParamRef<jobject>& query_result_jobj,
     const JavaParamRef<jstring>& url) {
   if (!profile_->IsSupervised()) {
-    // User isn't supervised
-    Java_SupervisedUserQueryReply_onQueryComplete(env, query_result_jobj);
+    // User isn't supervised, this can only happen if Chrome isn't signed in,
+    // in which case all requests should be rejected
+    Java_SupervisedUserQueryReply_onQueryFailed(
+        AttachCurrentThread(), query_result_jobj,
+        supervised_user_error_page::NOT_SIGNED_IN, false, true, nullptr,
+        nullptr, nullptr, nullptr, nullptr, nullptr);
     return;
   }
   SupervisedUserService* supervised_user_service =
       SupervisedUserServiceFactory::GetForProfile(profile_);
   SupervisedUserURLFilter* url_filter =
       supervised_user_service->GetURLFilterForUIThread();
   url_filter->GetFilteringBehaviorForURLWithAsyncChecks(
       GURL(base::android::ConvertJavaStringToUTF16(env, url)),
       base::Bind(&SupervisedUserContentProvider::OnQueryComplete,
                  weak_factory_.GetWeakPtr(),
@@ skipping 62 matching lines @@
 void SupervisedUserContentProvider::OnInsertRequestSendComplete(
     ScopedJavaGlobalRef<jobject> insert_reply_jobj,
     bool sent_ok) {
   Java_SupervisedUserInsertReply_onInsertRequestSendComplete(
       AttachCurrentThread(), insert_reply_jobj, sent_ok);
 }
 
 bool SupervisedUserContentProvider::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }