WebKit2 Authentication Support

Reviewed by Anders Carlsson.

WebCore: 

* WebCore.exp.in:

Expose the AuthenticationClient for WK2 platforms (Windows already does this):
* platform/network/mac/AuthenticationChallenge.h:
* platform/network/mac/AuthenticationMac.mm:
(-[WebCoreAuthenticationClientAsChallengeSender client]):
(WebCore::AuthenticationChallenge::authenticationClient):

* platform/network/qt/AuthenticationChallenge.h:
(WebCore::AuthenticationChallenge::authenticationClient):

WebKit2: 

With this patch in place, authentication challenges are sent up from WebCore and shipped over the IPC layer.
Client apps can implement the related client methods to attempt to continue without credentials or cancel a
challenge.

There's not yet API to inspect a challenge or create a credential to use in reply - that will come later.

Build-system changes:
* DerivedSources.make:
* DerivedSources.pro:
* WebKit2.pro:
* WebKit2.xcodeproj/project.pbxproj:
* win/WebKit2.vcproj:
* win/WebKit2Common.vsprops:

Messages and casts for IPC and APIs:
* Platform/CoreIPC/MessageID.h:
* Shared/API/c/WKBase.h:
* Shared/APIObject.h:
* Shared/WebCoreArgumentCoders.h:
* UIProcess/API/C/WKAPICast.h:
* WebProcess/WebProcess.cpp:
(WebKit::WebProcess::didReceiveMessage):

Stub out the AuthenticationChallenge class family:
* UIProcess/API/C/WKAuthenticationChallenge.cpp: Added.
(WKAuthenticationChallengeGetTypeID):
* UIProcess/API/C/WKAuthenticationChallenge.h: Added.
* UIProcess/API/C/WKCredential.cpp: Added.
(WKCredentialGetTypeID):
* UIProcess/API/C/WKCredential.h: Added.
* UIProcess/API/C/WKProtectionSpace.cpp: Added.
(WKProtectionSpaceGetTypeID):
* UIProcess/API/C/WKProtectionSpace.h: Added.

Add an Authentication listener for the client app to respond to:
* UIProcess/API/C/WKAuthenticationDecisionListener.cpp: Added.
(WKAuthenticationDecisionListenerGetTypeID):
(WKAuthenticationDecisionListenerUseCredential):
(WKAuthenticationDecisionListenerCancel):
* UIProcess/API/C/WKAuthenticationDecisionListener.h: Added.

Add Authentication related methods to the page loader client:
* UIProcess/API/C/WKPage.h:

Add empty implementations of the new API objects:
* UIProcess/Authentication: Added.
* UIProcess/Authentication/AuthenticationChallengeProxy.cpp: Added.
(WebKit::AuthenticationChallengeProxy::AuthenticationChallengeProxy):
(WebKit::AuthenticationChallengeProxy::~AuthenticationChallengeProxy):
(WebKit::AuthenticationChallengeProxy::useCredential):
(WebKit::AuthenticationChallengeProxy::cancel):
* UIProcess/Authentication/AuthenticationChallengeProxy.h: Added.
(WebKit::AuthenticationChallengeProxy::create):
(WebKit::AuthenticationChallengeProxy::listener):
(WebKit::AuthenticationChallengeProxy::type):

* UIProcess/Authentication/WebCredential.cpp: Added.
(WebKit::WebCredential::core):
* UIProcess/Authentication/WebCredential.h: Added.
(WebKit::WebCredential::create):
(WebKit::WebCredential::type):
* UIProcess/Authentication/WebProtectionSpace.cpp: Added.
(WebKit::WebProtectionSpace::WebProtectionSpace):
* UIProcess/Authentication/WebProtectionSpace.h: Added.
(WebKit::WebProtectionSpace::create):
(WebKit::WebProtectionSpace::type):

Add implementation of the Authentication decision listener:
* UIProcess/Authentication/AuthenticationDecisionListener.cpp: Added.
(WebKit::AuthenticationDecisionListener::AuthenticationDecisionListener):
(WebKit::AuthenticationDecisionListener::useCredential):
(WebKit::AuthenticationDecisionListener::cancel):
(WebKit::AuthenticationDecisionListener::detachChallenge):
* UIProcess/Authentication/AuthenticationDecisionListener.h: Added.
(WebKit::AuthenticationDecisionListener::create):
(WebKit::AuthenticationDecisionListener::type):

WebPage and PageLoaderClient glue:
* UIProcess/WebLoaderClient.cpp:
(WebKit::WebLoaderClient::canAuthenticateAgainstProtectionSpaceInFrame):
(WebKit::WebLoaderClient::didReceiveAuthenticationChallengeInFrame):
* UIProcess/WebLoaderClient.h:
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::canAuthenticateAgainstProtectionSpaceInFrame):
(WebKit::WebPageProxy::didReceiveAuthenticationChallenge):
* UIProcess/WebPageProxy.h:
* UIProcess/WebPageProxy.messages.in:

Add a manager to map the actual platform authentication challenges to a challenge ID,
as at least some platforms require the object identity to persist:
* WebProcess/Authentication: Added.
* WebProcess/Authentication/AuthenticationManager.cpp: Added.
(WebKit::generateAuthenticationChallengeID):
(WebKit::AuthenticationManager::shared):
(WebKit::AuthenticationManager::AuthenticationManager):
(WebKit::AuthenticationManager::didReceiveMessage):
(WebKit::AuthenticationManager::didReceiveAuthenticationChallenge):
(WebKit::AuthenticationManager::useCredentialForChallenge):
(WebKit::AuthenticationManager::continueWithoutCredentialForChallenge):
(WebKit::AuthenticationManager::cancelChallenge):
* WebProcess/Authentication/AuthenticationManager.h: Added.
* WebProcess/Authentication/AuthenticationManager.messages.in: Added.

Hand off Authentication challenges to the manager to be sent over IPC:
* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::WebFrameLoaderClient::dispatchDidReceiveAuthenticationChallenge):
(WebKit::WebFrameLoaderClient::canAuthenticateAgainstProtectionSpace):

* UIProcess/API/qt/qwkpage.cpp:

WebKitTools: 

Keep these builds working:
* MiniBrowser/mac/BrowserWindowController.m:
(-[BrowserWindowController awakeFromNib]):

* WebKitTestRunner/TestController.cpp:
(WTR::TestController::initialize):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@73281 268f45cc-cd09-0410-ab3c-d52691b4dbfc