https://bugs.webkit.org/show_bug.cgi?id=125022

Reviewed by Dan Bernstein.

* Shared/Cocoa/APIObject.mm:
(API::Object::newObject):
        
* Shared/mac/ObjCObjectGraphCoders.mm:
Add support for WKProcessGroup.

(WebKit::WebContextObjCObjectGraphDecoderImpl::decode):
Replace call to _browsingContextControllerForPageRef: with wrapper.

* UIProcess/API/Cocoa/WKBrowsingContextController.mm:
Convert from wrapping the C-SPI type to storing the bits of the wrapped object inline.

(-[WKBrowsingContextController dealloc]):
Add explicit destructor call.

(-[WKBrowsingContextController setLoadDelegate:]):
(-[WKBrowsingContextController setPolicyDelegate:]):
Lazily set up the load and policy clients only once a delegate has been set to allow
continued use of the C-SPI clients for WebKitTestRunner.

(-[WKBrowsingContextController _finishInitialization]):
Move remaining work that was done in the initialize (setting up the observer) here,
and have the WebPageProxy call it.

* UIProcess/API/Cocoa/WKBrowsingContextControllerInternal.h:
(WebKit::wrapper):
Add wrapper() helper and declare conformance to the WKObject protocol. Remove no longer used
_initWithPageRef: and _browsingContextControllerForPageRef: helpers.

* UIProcess/API/Cocoa/WKProcessGroup.mm:
(didNavigateWithNavigationData):
(didPerformClientRedirect):
(didPerformServerRedirect):
(didUpdateHistoryTitle):
Switch to using wrapper().

* UIProcess/API/ios/WKContentView.mm:
* UIProcess/API/mac/WKView.mm:
Stop caching the WKBrowsingContextController, as it no long makes sense since it is the same object
as the WebPageProxy.

* UIProcess/mac/WebPageProxyMac.mm:
(WebKit::WebPageProxy::platformInitialize):
Inform the wrapper that it is safe to finish initialization.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@159877 268f45cc-cd09-0410-ab3c-d52691b4dbfc