TestBrowserThreads must outlive TestProfiles and TestProfileManagers

chrome/browser/download/download_request_limiter_unittest.cc

 // Copyright (c) 2012 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/download/download_request_limiter.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
@@ skipping 143 matching lines @@
         profile_->GetPrefs(), false /* incognito_profile */,
         false /* guest_profile */);
     DownloadRequestLimiter::SetContentSettingsForTesting(
         content_settings_.get());
   }
 
   void TearDown() override {
     content_settings_->ShutdownOnUIThread();
     content_settings_ = nullptr;
     testing_delegate_.TearDown();
+
+    // |profile_| must be teared down before
+    // |RenderViewHostTestHarness::thread_bundle_|.
+    profile_.reset();
+
     ChromeRenderViewHostTestHarness::TearDown();
   }
 
   void CanDownload() {
     CanDownloadFor(web_contents());
   }
 
   void CanDownloadFor(WebContents* web_contents) {
     download_request_limiter_->CanDownloadImpl(
         web_contents,
@@ skipping 535 matching lines @@
   // changing the content setting).
   UpdateContentSettings(web_contents(), CONTENT_SETTING_ASK);
   ASSERT_EQ(DownloadRequestLimiter::PROMPT_BEFORE_DOWNLOAD,
             download_request_limiter_->GetDownloadStatus(web_contents()));
   UpdateExpectations(WAIT);
   CanDownload();
   ExpectAndResetCounts(0, 0, 1, __LINE__);
   ASSERT_EQ(DownloadRequestLimiter::PROMPT_BEFORE_DOWNLOAD,
             download_request_limiter_->GetDownloadStatus(web_contents()));
 }