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

chrome/browser/autofill/content_autofill_driver_browsertest.cc

 // Copyright 2014 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/memory/scoped_ptr.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/url_constants.h"
@@ skipping 59 matching lines @@
 };
 
 }  // namespace
 
 class ContentAutofillDriverBrowserTest : public InProcessBrowserTest,
                                          public content::WebContentsObserver {
  public:
   ContentAutofillDriverBrowserTest() {}
   virtual ~ContentAutofillDriverBrowserTest() {}
 
-  virtual void SetUpOnMainThread() override {
+  void SetUpOnMainThread() override {
     content::WebContents* web_contents =
         browser()->tab_strip_model()->GetActiveWebContents();
     ASSERT_TRUE(web_contents != NULL);
     Observe(web_contents);
     AutofillManager::RegisterProfilePrefs(autofill_client_.GetPrefRegistry());
 
     web_contents->RemoveUserData(
         ContentAutofillDriverFactory::
             kContentAutofillDriverFactoryWebContentsUserDataKey);
     ContentAutofillDriverFactory::CreateForWebContentsAndDelegate(
         web_contents, &autofill_client_, "en-US",
         AutofillManager::DISABLE_AUTOFILL_DOWNLOAD_MANAGER);
   }
 
-  virtual void WasHidden() override {
+  void WasHidden() override {
     if (!web_contents_hidden_callback_.is_null())
       web_contents_hidden_callback_.Run();
   }
 
-  virtual void NavigationEntryCommitted(
+  void NavigationEntryCommitted(
       const content::LoadCommittedDetails& load_details) override {
     if (!nav_entry_committed_callback_.is_null())
       nav_entry_committed_callback_.Run();
   }
 
  protected:
-  content::WebContents* web_contents_;
-
   base::Closure web_contents_hidden_callback_;
   base::Closure nav_entry_committed_callback_;
 
   testing::NiceMock<MockAutofillClient> autofill_client_;
 };
 
 IN_PROC_BROWSER_TEST_F(ContentAutofillDriverBrowserTest,
                        SwitchTabAndHideAutofillPopup) {
   // Notification is different on platforms. On linux this will be called twice,
   // while on windows only once.
@@ skipping 26 matching lines @@
   browser()->OpenURL(content::OpenURLParams(GURL(chrome::kChromeUIAboutURL),
                                             content::Referrer(),
                                             CURRENT_TAB,
                                             ui::PAGE_TRANSITION_TYPED,
                                             false));
   runner->Run();
   nav_entry_committed_callback_.Reset();
 }
 
 }  // namespace autofill