ShortcutManager constructor: Added DCHECK for UI thread.

chrome/test/base/testing_profile.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/test/base/testing_profile.h"
 
 #include "build/build_config.h"
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
@@ skipping 265 matching lines @@
       // That shouldn't happen, but if it does, try to recover.
       LOG(ERROR) << "Failed to use a fallback temporary directory.";
 
       // We're screwed if this fails, see CHECK above.
       CHECK(temp_dir_.Set(system_tmp_dir));
     }
   }
 }
 
 void TestingProfile::Init() {
+  // If threads have been initialized, we should be on the UI thread.
+  DCHECK(
+      !content::BrowserThread::IsWellKnownThread(content::BrowserThread::UI) ||
+      content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+
   // Normally this would happen during browser startup, but for tests
   // we need to trigger creation of Profile-related services.
   ChromeBrowserMainExtraPartsProfiles::
       EnsureBrowserContextKeyedServiceFactoriesBuilt();
 
   if (prefs_.get())
     user_prefs::UserPrefs::Set(this, prefs_.get());
   else
     CreateTestingPrefService();
 
@@ skipping 521 matching lines @@
 
 scoped_ptr<TestingProfile> TestingProfile::Builder::Build() {
   DCHECK(!build_called_);
   build_called_ = true;
   return scoped_ptr<TestingProfile>(new TestingProfile(
       path_,
       delegate_,
       extension_policy_,
       pref_service_.Pass()));
 }