https://bugs.webkit.org/show_bug.cgi?id=40382

Reviewed by Eric Carlson.

Source/WebCore:

Test: http/tests/media/video-auth.html

Adopt a new AVFoundation API to handle authentication challenge generated while loading
media through an AVAsset. The authentication request comes through as a
NSURLAuthenticationChallenge, and is wrapped in a WebCore::AuthenticationChallenge
by MediaPlayerPrivateAVFoundationObjC, and is sent up to the HTMLMediaElement to handle.
The HTMLMediaElement creates a ResourceRequest, and passes the challenge up to the
ResourceLoadNotifier.

To allow the HTMLMediaElement to initiate handling an AuthenticationChallenge without
actually creating a ResourceLoader, allow ResourceLoaderDelegate to accept a unique
identifier and a DocumentLoader in lieu of a ResourceLoader.

* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::parseAttribute):
* html/HTMLMediaElement.h:
* loader/ResourceLoadNotifier.cpp:
(WebCore::ResourceLoadNotifier::didReceiveAuthenticationChallenge):
(WebCore::ResourceLoadNotifier::didCancelAuthenticationChallenge):
* loader/ResourceLoadNotifier.h:
* platform/graphics/MediaPlayer.cpp:
(WebCore::MediaPlayer::shouldWaitForResponseToAuthenticationChallenge):
* platform/graphics/MediaPlayer.h:
(WebCore::MediaPlayerClient::mediaPlayerShouldWaitForResponseToAuthenticationChallenge):
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.h:
* platform/graphics/avfoundation/objc/MediaPlayerPrivateAVFoundationObjC.mm:
(WebCore::MediaPlayerPrivateAVFoundationObjC::shouldWaitForResponseToAuthenticationChallenge):
(-[WebCoreAVFLoaderDelegate resourceLoader:shouldWaitForResponseToAuthenticationChallenge:]):

LayoutTests:

* http/tests/media/resources/video-auth.php: Added.
* http/tests/media/video-auth-expected.txt: Added.
* http/tests/media/video-auth.html: Added.
* platform/mac/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@161455 268f45cc-cd09-0410-ab3c-d52691b4dbfc