Unify most of the WebKit Objective-C API sources

Unify most of the WebKit Objective-C API sources
https://bugs.webkit.org/show_bug.cgi?id=189447

Reviewed by Andy Estes.

Unify and fix errors.

* Shared/API/Cocoa/_WKFrameHandle.mm:
* Shared/API/Cocoa/_WKRemoteObjectRegistry.mm:
* SourcesCocoa.txt:
* UIProcess/API/Cocoa/APIContentRuleListStoreCocoa.mm:
* UIProcess/API/Cocoa/WKBackForwardList.mm:
* UIProcess/API/Cocoa/WKBackForwardListItem.mm:
* UIProcess/API/Cocoa/WKBrowsingContextController.mm:
* UIProcess/API/Cocoa/WKBrowsingContextGroup.mm:
* UIProcess/API/Cocoa/WKConnection.mm:
* UIProcess/API/Cocoa/WKNSURLAuthenticationChallenge.mm:
* UIProcess/API/Cocoa/WKNavigationData.mm:
* UIProcess/API/Cocoa/WKProcessGroup.mm:
* UIProcess/API/Cocoa/WKURLSchemeTask.mm:
* UIProcess/API/Cocoa/WKWebViewConfiguration.mm:
* UIProcess/API/Cocoa/WKWebsiteDataStore.mm:
* UIProcess/API/Cocoa/_WKAttachment.mm:
* UIProcess/API/Cocoa/_WKGeolocationPosition.mm:
* UIProcess/API/Cocoa/_WKRemoteWebInspectorViewController.mm:
* UIProcess/API/Cocoa/_WKThumbnailView.mm:
* UIProcess/API/mac/WKView.mm:
* WebKit.xcodeproj/project.pbxproj:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInFrame.mm:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInHitTestResult.mm:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInNodeHandle.mm:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInPageGroup.mm:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInRangeHandle.mm:
* WebProcess/InjectedBundle/API/Cocoa/WKWebProcessPlugInScriptWorld.mm:
* WebProcess/InjectedBundle/API/mac/WKWebProcessPlugIn.mm:
* WebProcess/InjectedBundle/API/mac/WKWebProcessPlugInBrowserContextController.mm:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@235828 268f45cc-cd09-0410-ab3c-d52691b4dbfc