https://bugs.webkit.org/show_bug.cgi?id=68644

Reviewed by Sam Weinig.

Make APIObjects for size, point and rect so that they can be
used in WKArrayRefs.

Make some inline helper methods to create WKSize, WKPoint and WKRect
types.

* GNUmakefile.am:
* Shared/API/c/WKBase.h:
* Shared/API/c/WKGeometry.cpp: Copied from Source/WebKit2/Shared/API/c/WKGeometry.h.
(WKSizeGetTypeID):
(WKPointGetTypeID):
(WKRectGetTypeID):
(WKPointCreate):
(WKSizeCreate):
(WKRectCreate):
(WKSizeGetValue):
(WKPointGetValue):
(WKRectGetValue):
* Shared/API/c/WKGeometry.h:
(WKPoint::WKPointMake):
(WKPoint::WKSizeMake):
(WKPoint::WKRectMake):
* Shared/API/c/WKSharedAPICast.h:
* Shared/APIObject.h:
* Shared/UserMessageCoders.h:
(WebKit::UserMessageEncoder::baseEncode):
(WebKit::UserMessageDecoder::baseDecode):
* Shared/WebGeometry.h: Added.
(WebKit::WebSize::create):
(WebKit::WebSize::size):
(WebKit::WebSize::WebSize):
(WebKit::WebSize::type):
(WebKit::WebPoint::create):
(WebKit::WebPoint::point):
(WebKit::WebPoint::WebPoint):
(WebKit::WebPoint::type):
(WebKit::WebRect::create):
(WebKit::WebRect::rect):
(WebKit::WebRect::WebRect):
(WebKit::WebRect::type):
* WebKit2.pro:
* WebKit2.xcodeproj/project.pbxproj:
* WebKit2API.pri:
* win/WebKit2.vcproj:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@95759 268f45cc-cd09-0410-ab3c-d52691b4dbfc