Allow chrome to become the os default handler for arbitrary protocols on mac/win.

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 118 matching lines @@
 extern const char kForceUninstall[];
 extern const char kInstallArchive[];
 extern const char kInstallerData[];
 extern const char kLogFile[];
 extern const char kMakeChromeDefault[];
 extern const char kMsi[];
 extern const char kMultiInstall[];
 extern const char kNewSetupExe[];
 extern const char kRegisterChromeBrowser[];
 extern const char kRegisterChromeBrowserSuffix[];
+extern const char kRegisterURLProtocol[];
 extern const char kRenameChromeExe[];
 extern const char kRemoveChromeRegistration[];
 extern const char kRunAsAdmin[];
 extern const char kSystemLevel[];
 extern const char kUninstall[];
 extern const char kUpdateSetupExe[];
 extern const char kVerboseLogging[];
 extern const char kShowEula[];
 extern const char kAltDesktopShortcut[];
 extern const char kInactiveUserToast[];
@@ skipping 38 matching lines @@
 extern const wchar_t kInstallerSuccessLaunchCmdLine[];
 
 // Product options.
 extern const wchar_t kOptionCeee[];
 extern const wchar_t kOptionMultiInstall[];
 extern const wchar_t kOptionReadyMode[];
 
 }  // namespace installer
 
 #endif  // CHROME_INSTALLER_UTIL_UTIL_CONSTANTS_H_