Merge 24674 - Poke a hole in the Sandbox for sending signals to self....

chrome/renderer/renderer.sb

 ;;
 ;; Copyright (c) 2009 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.
 ;;
 (version 1)
 (deny default)
 
+; Allow sending signals to self - http://crbug.com/20370
+(allow %signal-self)
+
 ; Needed for full-page-zoomed controls - http://crbug.com/11325
 (allow sysctl-read)
 
 ; Each line is marked with the System version that needs it.
 ; This profile is tested with the following system versions:
 ;     10.5.6, 10.6 seed release
 
 ; Allow following symlinks
 (allow file-read-metadata)  ; 10.5.6
 
 ; Loading System Libraries.
 (allow file-read-data (regex #"^/System/Library/Frameworks"))  ; 10.5.6
 (allow file-read-data (regex #"^/System/Library/PrivateFrameworks"))  ; 10.5.6
 (allow file-read-data (regex #"^/System/Library/CoreServices"))  ; 10.5.6
 
 ; Needed for Fonts.
 (allow file-read-data (regex #"^/System/Library/Fonts"))  ; 10.5.6
 (allow file-read-data (regex #"^/Library/Fonts"))  ; 10.6 seed release
 (allow mach-lookup (global-name "com.apple.FontObjectsServer"))  ; 10.5.6
 (allow mach-lookup (global-name "com.apple.FontServer"))  ; 10.6 seed release
 
 ; USER_HOMEDIR is substitued at runtime - http://crbug.com/11269 
 (allow file-read-data (regex #"^USER_HOMEDIR/Library/Fonts"))  ; 10.6 seed release
 
 ; Needed for IPC on 10.6
 (allow ipc-posix-shm)