Do not rely on identical string constants having distinct pointers.

chrome/tools/disable_outdated_build_detector/constants.h

 // Copyright 2016 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.
 
 #ifndef CHROME_TOOLS_DISABLE_OUTDATED_BUILD_DETECTOR_CONSTANTS_H_
 #define CHROME_TOOLS_DISABLE_OUTDATED_BUILD_DETECTOR_CONSTANTS_H_
 
 #include <stdint.h>
 
 namespace switches {
 
 extern const char kMultiInstall[];
 extern const char kSystemLevel[];
 
 }  // namespace switches
 
 namespace env {
 
 extern const char kGoogleUpdateIsMachine[];
 
 }  // namespace env
 
-extern const wchar_t kChromeAppGuid[];
-extern const wchar_t kBinariesAppGuid[];
-
 extern const wchar_t kAOHY[];
 extern const wchar_t kBrand[];
 extern const wchar_t kInstallerResult[];
 extern const wchar_t kInstallerError[];
 extern const wchar_t kInstallerExtraCode1[];
 extern const wchar_t kUninstallArguments[];
 
 // Values for the process exit code and for Google Update's InstallerError,
 // both of which are of type DWORD (a 32-bit unsigned int). The codes start at
 // 1000 so as to not collide with existing setup.exe and mini_installer.exe
@@ skipping 16 matching lines @@
   FAILED_READING_BRAND = 1013,  // RegQueryValueEx failed.
   FAILED_WRITING_BRAND = 1014,  // RegSetValueEx failed.
 };
 
 // Values defined by Google Update.
 enum class InstallerResult : uint32_t {
   FAILED_CUSTOM_ERROR = 1,
 };
 
 #endif  // CHROME_TOOLS_DISABLE_OUTDATED_BUILD_DETECTOR_CONSTANTS_H_