clang/win: Fix most -Wwriteable-strings warnings.

rlz/win/lib/rlz_lib_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.
 //
 // A library to manage RLZ information for access-points shared
 // across different client applications.
 
 #include "rlz/lib/rlz_lib.h"
 
 #include <windows.h>
@@ skipping 135 matching lines @@
     return false;
   }
 
   // Add ALL-USERS ALL-ACCESS ACL.
   EXPLICIT_ACCESS ea;
   ZeroMemory(&ea, sizeof(EXPLICIT_ACCESS));
   ea.grfAccessPermissions = GENERIC_ALL | KEY_ALL_ACCESS;
   ea.grfAccessMode = GRANT_ACCESS;
   ea.grfInheritance= SUB_CONTAINERS_AND_OBJECTS_INHERIT;
   ea.Trustee.TrusteeForm = TRUSTEE_IS_NAME;
-  ea.Trustee.ptstrName = L"Everyone";
+  ea.Trustee.ptstrName = const_cast<wchar_t*>(L"Everyone");
 
   ACL* new_dacl = NULL;
   result = SetEntriesInAcl(1, &ea, dacl, &new_dacl);
   if (result != ERROR_SUCCESS) {
     ASSERT_STRING("rlz_lib::CreateMachineState: SetEntriesInAcl failed");
     return false;
   }
 
   BOOL ok = SetSecurityDescriptorDacl(new_sd, TRUE, new_dacl, FALSE);
   if (!ok) {
@@ skipping 33 matching lines @@
   return MachineDealCode::Get(dcc, dcc_size);
 }
 
 // Combined functions.
 
 bool SetMachineDealCodeFromPingResponse(const char* response) {
   return MachineDealCode::SetFromPingResponse(response);
 }
 
 }  // namespace rlz_lib