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

chrome/browser/ui/views/toolbar/browser_actions_container_browsertest.cc

 // Copyright 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 "chrome/browser/ui/views/toolbar/browser_actions_container.h"
 
 #include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
 #include "chrome/browser/extensions/browser_action_test_util.h"
 #include "chrome/browser/extensions/extension_toolbar_model.h"
 #include "chrome/browser/ui/browser_window.h"
@@ skipping 241 matching lines @@
   BrowserActionsContainer* main_bar_;
 
   // A parent view for the overflow menu.
   scoped_ptr<views::View> overflow_parent_;
 
   // The overflow BrowserActionsContainer. We manufacture this so that we don't
   // have to open the wrench menu.
   // Owned by the |overflow_parent_|.
   BrowserActionsContainer* overflow_bar_;
 
-  // The associated toolbar model.
-  extensions::ExtensionToolbarModel* model_;
-
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainerOverflowTest);
 };
 
 void BrowserActionsContainerOverflowTest::SetUpOnMainThread() {
   BrowserActionsBarBrowserTest::SetUpOnMainThread();
   main_bar_ = BrowserView::GetBrowserViewForBrowser(browser())
                   ->toolbar()->browser_actions();
   overflow_parent_.reset(new views::View());
   overflow_parent_->set_owned_by_client();
   overflow_bar_ = new BrowserActionsContainer(browser(), main_bar_);
@@ skipping 154 matching lines @@
 
   main_bar()->OnDragUpdated(target_event3);
   main_bar()->OnPerformDrop(target_event3);
 
   // Order should be A C B, and there should be no extensions in overflow.
   EXPECT_EQ(extension_a()->id(), main_bar()->GetIdAt(0u));
   EXPECT_EQ(extension_c()->id(), main_bar()->GetIdAt(1u));
   EXPECT_EQ(extension_b()->id(), main_bar()->GetIdAt(2u));
   EXPECT_TRUE(VerifyVisibleCount(3u));
 }