Fix entitlements and sandboxing for iphoneminimalsimulator

Fix entitlements and sandboxing for iphoneminimalsimulator
https://bugs.webkit.org/show_bug.cgi?id=184692

Reviewed by Tim Horton.

Use the correct implementations for ChildProcess and NetworkProcess
when building for iphoneminimalsimulator. Stub out imlementations
which rely on methods not available in the iphoneminimalsimulator SDK.

* Configurations/Network-OSX.entitlements: Added.
* Configurations/NetworkService.xcconfig:
* NetworkProcess/cocoa/NetworkProcessCocoa.mm:
(WebKit::NetworkProcess::sourceApplicationAuditData const):
* NetworkProcess/ios/NetworkProcessIOS.mm:
* NetworkProcess/mac/NetworkProcessMac.mm:
(WebKit::NetworkProcess::initializeProcessName):
(WebKit::overrideSystemProxies):
* Shared/ios/ChildProcessIOS.mm:
(WebKit::ChildProcess::initializeSandbox):
* Shared/mac/ChildProcessMac.mm:
(WebKit::ChildProcess::setApplicationIsDaemon):
(WebKit::enableSandboxStyleFileQuarantine):
(WebKit::ChildProcess::initializeSandbox):
(WebKit::ChildProcess::platformStopRunLoop):
* Shared/mac/CodeSigning.mm:
* WebKit.xcodeproj/project.pbxproj:
* WebProcess/cocoa/WebProcessCocoa.mm:
(WebKit::WebProcess::initializeSandbox):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@230778 268f45cc-cd09-0410-ab3c-d52691b4dbfc