Updated merge policies on children contexts.
Updated merge policies on children contexts.

Allow2CEO/browser-ios,Allow2CEO/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,brave/browser-ios,brave/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,brave/browser-ios,brave/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios,Allow2CEO/browser-ios