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

chrome/browser/ui/views/crypto_module_password_dialog_view_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/ui/views/crypto_module_password_dialog_view.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 10 matching lines @@
 
   void Capture(const std::string& text) {
     text_ = text;
   }
 
   void CreateCryptoDialog(const CryptoModulePasswordCallback& callback) {
     dialog_.reset(new CryptoModulePasswordDialogView("slot",
         kCryptoModulePasswordKeygen, "server", callback));
   }
 
-  CryptoModulePasswordCallback* callback_;
   std::string text_;
   scoped_ptr<CryptoModulePasswordDialogView> dialog_;
 };
 
 TEST_F(CryptoModulePasswordDialogViewTest, TestAccept) {
   CryptoModulePasswordCallback cb(
       base::Bind(&CryptoModulePasswordDialogViewTest::Capture,
                  base::Unretained(this)));
   CreateCryptoDialog(cb);
   EXPECT_EQ(dialog_->password_entry_, dialog_->GetInitiallyFocusedView());
   EXPECT_TRUE(dialog_->GetModalType() != ui::MODAL_TYPE_NONE);
   const std::string kPassword = "diAl0g";
   dialog_->password_entry_->SetText(base::ASCIIToUTF16(kPassword));
   EXPECT_TRUE(dialog_->Accept());
   EXPECT_EQ(kPassword, text_);
   const base::string16 empty;
   EXPECT_EQ(empty, dialog_->password_entry_->text());
 }
 
 }  // namespace chrome