TestBrowserThreads must outlive TestProfiles and TestProfileManagers

chrome/browser/prerender/prerender_unittest.cc

Index: chrome/browser/prerender/prerender_unittest.cc
diff --git a/chrome/browser/prerender/prerender_unittest.cc b/chrome/browser/prerender/prerender_unittest.cc
index 13a0e960ca2f02a921f4858fef0c6645a71833fc..9cf00489e52a810e687320ce29c8db0bd10b00f8 100644
--- a/chrome/browser/prerender/prerender_unittest.cc
+++ b/chrome/browser/prerender/prerender_unittest.cc
@@ -405,8 +405,9 @@ class PrerenderTest : public testing::Test {
  private:
   // Needed to pass PrerenderManager's DCHECKs.
   base::MessageLoop message_loop_;
-  TestingProfile profile_;
   content::TestBrowserThread ui_thread_;
+
+  TestingProfile profile_;
   std::unique_ptr<UnitTestPrerenderManager> prerender_manager_;
   std::unique_ptr<PrerenderLinkManager> prerender_link_manager_;
   int last_prerender_id_;