https://bugs.webkit.org/show_bug.cgi?id=125539

Reviewed by Tim Horton.

All API::Objects are by definition typed, so ObjectImpl makes more sense as a name.

* Shared/APIArray.h:
* Shared/APIFrameHandle.h:
* Shared/APIObject.h:
(API::ObjectImpl::~ObjectImpl):
(API::ObjectImpl::ObjectImpl):
* Shared/APIPageHandle.h:
* Shared/ImmutableDictionary.h:
* Shared/WebArchive.h:
* Shared/WebArchiveResource.h:
* Shared/WebBackForwardListItem.h:
* Shared/WebCertificateInfo.h:
* Shared/WebConnection.h:
* Shared/WebContextMenuItem.h:
* Shared/WebData.h:
* Shared/WebError.h:
* Shared/WebGeolocationPosition.h:
* Shared/WebGeometry.h:
* Shared/WebHitTestResult.h:
* Shared/WebImage.h:
* Shared/WebNumber.h:
* Shared/WebOpenPanelParameters.h:
* Shared/WebRenderLayer.h:
* Shared/WebRenderObject.h:
* Shared/WebSecurityOrigin.h:
* Shared/WebSerializedScriptValue.h:
* Shared/WebString.h:
* Shared/WebURL.h:
* Shared/WebURLRequest.h:
* Shared/WebURLResponse.h:
* Shared/WebUserContentURLPat...