Cleanup: Remove unused variables in chrome/ found by Scythe.

chrome/browser/ui/views/first_run_bubble_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 "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/views/first_run_bubble.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/search_engines/template_url.h"
 #include "components/search_engines/template_url_service.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/views/test/views_test_base.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
 class FirstRunBubbleTest : public views::ViewsTestBase {
  public:
   FirstRunBubbleTest();
   ~FirstRunBubbleTest() override;
 
   // Overrides from views::ViewsTestBase:
   void SetUp() override;
 
  protected:
   TestingProfile* profile() { return &profile_; }
 
  private:
   TestingProfile profile_;
-  TemplateURL* default_t_url_;
 
   DISALLOW_COPY_AND_ASSIGN(FirstRunBubbleTest);
 };
 
-FirstRunBubbleTest::FirstRunBubbleTest() : default_t_url_(NULL) {}
+FirstRunBubbleTest::FirstRunBubbleTest() {}
 FirstRunBubbleTest::~FirstRunBubbleTest() {}
 
 void FirstRunBubbleTest::SetUp() {
   ViewsTestBase::SetUp();
   TemplateURLServiceFactory::GetInstance()->SetTestingFactoryAndUse(
       &profile_, &TemplateURLServiceFactory::BuildInstanceFor);
   TemplateURLService* turl_model =
       TemplateURLServiceFactory::GetForProfile(&profile_);
   turl_model->Load();
 }
 
 TEST_F(FirstRunBubbleTest, CreateAndClose) {
   // Create the anchor and parent widgets.
   views::Widget::InitParams params =
       CreateParams(views::Widget::InitParams::TYPE_WINDOW);
   params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
   scoped_ptr<views::Widget> anchor_widget(new views::Widget);
   anchor_widget->Init(params);
   anchor_widget->Show();
 
   FirstRunBubble* delegate =
       FirstRunBubble::ShowBubble(NULL, anchor_widget->GetContentsView());
   EXPECT_TRUE(delegate != NULL);
   delegate->GetWidget()->CloseNow();
 }