Make WebDataService no longer depend on ProfileKeyedService

chrome/browser/profiles/profile_browsertest.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/profiles/profile.h"
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/platform_file.h"
 #include "base/prefs/pref_service.h"
@@ skipping 207 matching lines @@
 
   // Subsequent calls to a non-crash value should be ignored.
   profile->SetExitType(Profile::EXIT_NORMAL);
   std::string second_call_value(prefs->GetString(prefs::kSessionExitType));
   EXPECT_EQ(first_call_value, second_call_value);
 
   // Setting back to a crashed value should work.
   profile->SetExitType(Profile::EXIT_CRASHED);
   std::string final_value(prefs->GetString(prefs::kSessionExitType));
   EXPECT_EQ(crash_value, final_value);
+
+  // This test runs fast enough that the WebDataService may still be
+  // initializing (which uses the temp directory) when the test
+  // ends. Give it a chance to complete.
+  profile.reset();
+  content::RunAllPendingInMessageLoop();
+  content::RunAllPendingInMessageLoop(content::BrowserThread::DB);
 }