https://bugs.webkit.org/show_bug.cgi?id=84099
<rdar://problem/11133877>

Reviewed by Sam Weinig.

Use PDFDocuemnt instead of CGPDFDocument when printing PDFs, because PDFKit knows
how to draw PDF buttons, and CG does not.

* Shared/mac/PDFKitImports.h: Added.
* Shared/mac/PDFKitImports.mm: Added.
* UIProcess/API/mac/WKPrintingView.mm:
Moved code for dealing with dynamically loaded PDFKit from WKPrintingView, as we
now also need it elsewhere.

* WebKit2.xcodeproj/project.pbxproj: Added
* WebProcess/Plugins/PDF/BuiltInPDFView.cpp: Rebamed to .mm.

* WebProcess/Plugins/PDF/BuiltInPDFView.h: Changed m_pdfDocument to PDFDocument.

* WebProcess/Plugins/PDF/BuiltInPDFView.mm: Copied from Source/WebKit2/WebProcess/Plugins/PDF/BuiltInPDFView.cpp.
(WebKit::BuiltInPDFView::pdfDocumentDidLoad):
(WebKit::BuiltInPDFView::calculateSizes):
(WebKit::BuiltInPDFView::paintContent):
Changed m_pdfDocument to PDFDocument, and updated for the changes. We still use
CGPDF when drawing to screen though, because that doesn't affect USPS.

* WebProcess/Plugins/Plugin.h: (WebKit::Plugin::pdfDocumentForPrinting): Updated
the type, and changed ifsed from CG to MAC, as we're now fully dependent on Cocoa.

* WebProcess/Plugins/PluginView.h: (WebKit::PluginView::pdfDocumentForPrinting):
Ditto.

* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::pdfDocumentForPrintingFrame):
(WebKit::WebPage::beginPrinting):
(WebKit::WebPage::computePagesForPrinting):
(WebKit::WebPage::drawRectToPDF):
(WebKit::WebPage::drawPagesToPDF):
* WebProcess/WebPage/WebPage.h:
Moved PDF document printing code to WebPageMac.mm, as it's now Objective C.

* WebProcess/WebPage/mac/WebPageMac.mm:
(WebKit::WebPage::computePagesForPrintingPDFDocument):
(WebKit::roundCGFloat):
(WebKit::drawPDFPage): While moving, also fixed a logic error in calculating the box
(it used to intersect with an empty box).
(WebKit::WebPage::drawRectToPDFFromPDFDocument):
(WebKit::WebPage::drawPagesToPDFFromPDFDocument):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114476 268f45cc-cd09-0410-ab3c-d52691b4dbfc