Make the NaCl windows 64 bit binaries not depend on chrome targets.

chrome/installer/util/util_constants.h

 // Copyright (c) 2011 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.
 //
 // Defines all install related constants that need to be used by Chrome as
 // well as Chrome Installer.
 
 #ifndef CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_
 #define CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_
 #pragma once
@@ skipping 150 matching lines @@
 extern const char kToastResultsKey[];
 }  // namespace switches
 
 extern const wchar_t kChromeDll[];
 extern const wchar_t kChromeExe[];
 extern const wchar_t kChromeFrameDll[];
 extern const wchar_t kChromeFrameHelperExe[];
 extern const wchar_t kChromeFrameHelperWndClass[];
 extern const wchar_t kChromeFrameReadyModeField[];
 extern const wchar_t kChromeLauncherExe[];
-extern const wchar_t kChromeNaCl64Dll[];
 extern const wchar_t kChromeOldExe[];
 extern const wchar_t kChromeNewExe[];
 extern const wchar_t kCmdQuickEnableCf[];
 extern const wchar_t kGoogleChromeInstallSubDir1[];
 extern const wchar_t kGoogleChromeInstallSubDir2[];
 extern const wchar_t kInstallBinaryDir[];
 extern const wchar_t kInstallerDir[];
 extern const wchar_t kInstallTempDir[];
 extern const wchar_t kInstallUserDataDir[];
 extern const wchar_t kNaClExe[];
@@ skipping 15 matching lines @@
 // Google Update named environment variable that implies kSystemLevel.
 extern const char kGoogleUpdateIsMachineEnvVar[];
 
 // Product options.
 extern const wchar_t kOptionMultiInstall[];
 extern const wchar_t kOptionReadyMode[];
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_