Ensure tests have an active task runner

chrome/browser/ui/omnibox/omnibox_edit_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 "base/strings/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete_classifier_factory.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/omnibox/omnibox_edit_controller.h"
 #include "chrome/browser/ui/omnibox/omnibox_edit_model.h"
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/toolbar/test_toolbar_model.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::ASCIIToUTF16;
 using base::UTF8ToUTF16;
 using content::WebContents;
 
 namespace {
 
 class TestingOmniboxView : public OmniboxView {
  public:
@@ skipping 98 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(TestingOmniboxEditController);
 };
 
 }  // namespace
 
 class AutocompleteEditTest : public ::testing::Test {
  public:
   TestToolbarModel* toolbar_model() { return &toolbar_model_; }
 
  private:
+  content::TestBrowserThreadBundle thread_bundle_;
   TestToolbarModel toolbar_model_;
 };
 
 // Tests various permutations of AutocompleteModel::AdjustTextForCopy.
 TEST_F(AutocompleteEditTest, AdjustTextForCopy) {
   struct Data {
     const char* perm_text;
     const int sel_start;
     const bool is_all_selected;
     const char* input;
@@ skipping 108 matching lines @@
 
   model.SetUserText(UTF8ToUTF16("he"));
   model.OnPopupDataChanged(UTF8ToUTF16("llo"), NULL, base::string16(), false);
   EXPECT_EQ(UTF8ToUTF16("hello"), view.GetText());
   EXPECT_EQ(UTF8ToUTF16("llo"), view.inline_autocomplete_text());
 
   model.AcceptTemporaryTextAsUserText();
   EXPECT_EQ(UTF8ToUTF16("hello"), view.GetText());
   EXPECT_EQ(base::string16(), view.inline_autocomplete_text());
 }