https://bugs.webkit.org/show_bug.cgi?id=94630

        Reviewed by Sam Weinig.

        * Shared/APIClientTraits.cpp:
        * Shared/APIClientTraits.h:
        * Shared/CoreIPCSupport/InjectedBundleMessageKinds.h:
        * UIProcess/API/C/WKPage.cpp:
        (WKPagePostMessageToInjectedBundle):
        * UIProcess/API/C/WKPage.h:
        * UIProcess/WebPageProxy.cpp:
        (WebKit::WebPageProxy::postMessageToInjectedBundle):
        * UIProcess/WebPageProxy.h:
        * WebProcess/InjectedBundle/API/c/WKBundle.h:
        * WebProcess/InjectedBundle/InjectedBundle.cpp:
        (WebKit::InjectedBundle::didReceiveMessageToPage):
        (WebKit::InjectedBundle::didReceiveMessage):
        * WebProcess/InjectedBundle/InjectedBundle.h:
        * WebProcess/InjectedBundle/InjectedBundleClient.cpp:
        (WebKit::InjectedBundleClient::didReceiveMessageToPage):
        * WebProcess/InjectedBundle/InjectedBundleClient.h:
        (InjectedBundleClient):
        Added a PostMessageToPage injected bundle message type, with all associated
        machinery. API is WKPagePostMessageToInjectedBundle(), and an associated
        didReceiveMessageToPage() injected bundle client function.

        * WebProcess/qt/QtBuiltinBundle.cpp: (WebKit::QtBuiltinBundle::initialize):
        Updated for new client API.

        * UIProcess/WebContext.cpp: (WebKit::WebContext::postMessageToInjectedBundle):
        Implemented multiple process model case.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126311 268f45cc-cd09-0410-ab3c-d52691b4dbfc