[Win] Add a fast profile switcher to the Windows taskbar item.

chrome/common/chrome_switches.h

 // 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.
 
 // Defines all the command-line switches used by Chrome.
 
 #ifndef CHROME_COMMON_CHROME_SWITCHES_H_
 #define CHROME_COMMON_CHROME_SWITCHES_H_
 
 #include "build/build_config.h"
@@ skipping 269 matching lines @@
 extern const char kProxyBypassList[];
 extern const char kProxyPacUrl[];
 extern const char kProxyServer[];
 extern const char kQuicConnectionOptions[];
 extern const char kQuicMaxPacketLength[];
 extern const char kQuicVersion[];
 extern const char kRecordMode[];
 extern const char kRememberCertErrorDecisions[];
 extern const char kResetAppListInstallState[];
 extern const char kRestoreLastSession[];
+extern const char kReuseExistingProfileBrowser[];
 extern const char kSavePageAsMHTML[];
 extern const char kSbDisableAutoUpdate[];
 extern const char kSbDisableDownloadProtection[];
 extern const char kSbDisableExtensionBlacklist[];
 extern const char kSbDisableSideEffectFreeWhitelist[];
 extern const char kServiceProcess[];
 extern const char kSilentDebuggerExtensionAPI[];
 extern const char kSilentLaunch[];
 extern const char kSetToken[];
 extern const char kShowAppList[];
@@ skipping 104 matching lines @@
 #if defined(OS_CHROMEOS)
 bool PowerOverlayEnabled();
 #endif
 
 // DON'T ADD RANDOM STUFF HERE. Put it in the main section above in
 // alphabetical order, or in one of the ifdefs (also in order in each section).
 
 }  // namespace switches
 
 #endif  // CHROME_COMMON_CHROME_SWITCHES_H_