https://bugs.webkit.org/show_bug.cgi?id=49282

Reviewed by Sam Weinig.

* Shared/API/c/WKBase.h:
Add WKBundlePageOverlayRef.

* Shared/APIObject.h:
Add TypeBundlePageOverlay.

* WebKit2.pro:
* WebKit2.xcodeproj/project.pbxproj:
Add new files.

* WebProcess/InjectedBundle/API/c/WKBundleAPICast.h:
Add WKBundlePageOverlayRef mapping.

* WebProcess/InjectedBundle/API/c/WKBundlePage.cpp:
(WKBundlePageInstallPageOverlay):
Install the passed in page overlay.

(WKBundlePageUninstallPageOverlay):
Uninstall the passed in page overlay.

* WebProcess/InjectedBundle/API/c/WKBundlePageOverlay.cpp: Added.
(PageOverlayClientImpl::create):
(PageOverlayClientImpl::PageOverlayClientImpl):
(PageOverlayClientImpl::pageOverlayDestroyed):
(PageOverlayClientImpl::willMoveToWebPage):
(PageOverlayClientImpl::didMoveToWebPage):
(PageOverlayClientImpl::drawRect):
(PageOverlayClientImpl::mouseEvent):
Add a PageOverlay::Client subclass that forwards everything to its client.

(WKBundlePageOverlayGetTypeID):
(WKBundlePageOverlayCreate):
Create a page overlay.

* WebProcess/WebPage/FindController.cpp:
(WebKit::FindController::pageOverlayDestroyed):
* WebProcess/WebPage/FindController.h:
Add stub.

* WebProcess/WebPage/PageOverlay.h:
Inherit from APIObject.

(WebKit::PageOverlay::type):
return TypeBundlePageOverlay.

* win/WebKit2.vcproj:
Add new files.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71685 268f45cc-cd09-0410-ab3c-d52691b4dbfc