Fix "unreachable code" warnings (MSVC warning 4702) in chrome/browser/.

chrome/browser/process_singleton_win.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/process_singleton.h"
 
 #include <shellapi.h>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
@@ skipping 178 matching lines @@
 // TODO(ananta)
 // Move this function to a common place as the Windows 8 delegate_execute
 // handler can possibly use this.
 bool ShouldLaunchInWindows8ImmersiveMode(const base::FilePath& user_data_dir) {
 #if defined(USE_AURA)
   // Returning false from this function doesn't mean we don't launch immersive
   // mode in Aura. This function is specifically called in case when we need
   // to relaunch desktop launched chrome into immersive mode through 'relaunch'
   // menu. In case of Aura, we will use delegate_execute to do the relaunch.
   return false;
-#endif
-
+#else
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return false;
 
   if (base::win::IsProcessImmersive(base::GetCurrentProcessHandle()))
     return false;
 
   if (ShellIntegration::GetDefaultBrowser() != ShellIntegration::IS_DEFAULT)
     return false;
 
   base::IntegrityLevel integrity_level = base::INTEGRITY_UNKNOWN;
@@ skipping 11 matching lines @@
 
   base::win::RegKey reg_key;
   DWORD reg_value = 0;
   if (reg_key.Create(HKEY_CURRENT_USER, chrome::kMetroRegistryPath,
                      KEY_READ) == ERROR_SUCCESS &&
       reg_key.ReadValueDW(chrome::kLaunchModeValue,
                           &reg_value) == ERROR_SUCCESS) {
     return reg_value == 1;
   }
   return base::win::IsTouchEnabledDevice();
+#endif
 }
 
 }  // namespace
 
 // Microsoft's Softricity virtualization breaks the sandbox processes.
 // So, if we detect the Softricity DLL we use WMI Win32_Process.Create to
 // break out of the virtualization environment.
 // http://code.google.com/p/chromium/issues/detail?id=43650
 bool ProcessSingleton::EscapeVirtualization(
     const base::FilePath& user_data_dir) {
@@ skipping 213 matching lines @@
           ::SetEvent(metro_activation_event);
       }
     }
   }
 
   return window_.hwnd() != NULL;
 }
 
 void ProcessSingleton::Cleanup() {
 }