Bug 1388172 - [Mac] Remove access to "com.apple.window_proxies" from the content sandbox. r=Alex_Gaynor

MozReview-Commit-ID: 2EtLWOvPtyK

--HG--
extra : rebase_source : 3be19fbee8c0989cdfd82283ec2fb8acc5795989

security/sandbox/mac/SandboxPolicies.h

@@ -185,7 +185,6 @@ static const char contentSandboxRules[] = R"(
   (allow mach-lookup
       (global-name "com.apple.coreservices.launchservicesd")
       (global-name "com.apple.pasteboard.1")
-      (global-name "com.apple.window_proxies")
       (global-name "com.apple.audio.coreaudiod")
       (global-name "com.apple.audio.audiohald")
       (global-name "com.apple.SystemConfiguration.configd")