Ensure tests have an active task runner

chrome/browser/extensions/token_cache/token_cache_service_unittest.cc

 // Copyright (c) 2013 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 "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/time/time.h"
 #include "chrome/browser/extensions/token_cache/token_cache_service.h"
 #include "chrome/test/base/testing_profile.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 using base::TimeDelta;
 
 namespace extensions {
 
 class TokenCacheTest : public testing::Test {
  public:
   TokenCacheTest() : cache_(&profile_) {}
@@ skipping 17 matching lines @@
     Time yesterday = now - one_day;
 
     TokenCacheService::TokenCacheData token_data;
     token_data.token = token_value;
     token_data.expiration_time = yesterday;
 
     cache_.token_cache_[token_name] = token_data;
   }
 
  protected:
+  content::TestBrowserThreadBundle thread_bundle_;
   TestingProfile profile_;
   TokenCacheService cache_;
 };
 
 TEST_F(TokenCacheTest, SaveTokenTest) {
   TimeDelta zero;
   cache_.StoreToken("foo", "bar", zero);
 
   EXPECT_EQ(1U, CacheSize());
   EXPECT_TRUE(HasMatch("foo"));
@@ skipping 43 matching lines @@
   InsertExpiredToken("foo", "bar");
 
   EXPECT_EQ(1U, CacheSize());
 
   // If we attempt to find the token, the attempt should fail.
   EXPECT_FALSE(HasMatch("foo"));
   EXPECT_EQ(0U, CacheSize());
 }
 
 } // namespace extensions