[BlackBerry] when one of multiple tabs uses authentication, user can get the auth dialog while the other tab has focus.
https://bugs.webkit.org/show_bug.cgi?id=95488
PR: 186597.

Internally reviewed by Joe Mason.
Patch by Lianghui Chen <liachen@rim.com> on 2012-09-07
Reviewed by Yong Li.

Source/WebCore:

The fix for this PR will come as 2 patches. This is the first patch which
will make the authentication challenge asynchronous inside WebKit. The
bext patch will add an AuthenticationChallengeManager that manages these
authentication requests asynchronously.

This patch add AuthenticationChallengeClient interface to define asynchronous
authentication challenge callback. And MediaPlayerPrivateBlackBerry and
NetworkJob are changed to inherit from AuthenticationChallengeClient to
support asynchronous authentication challenge.

Note: there is also an accompanying platform patch to make our PlatformPlayer
to support asychronous authentication, see PR 186597 for details.

No new tests as this is platform specific change.

* platform/blackberry/AuthenticationChallengeManager.h: Added.
(WebCore):
(AuthenticationChallengeClient):
* platform/blackberry/PageClientBlackBerry.h:
(WebCore):
* platform/graphics/blackberry/MediaPlayerPrivateBlackBerry.cpp:
(WebCore::MediaPlayerPrivate::onAuthenticationNeeded):
(WebCore::MediaPlayerPrivate::notifyChallengeResult):
* platform/graphics/blackberry/MediaPlayerPrivateBlackBerry.h:
(MediaPlayerPrivate):
* platform/network/blackberry/NetworkJob.cpp:
(WebCore::NetworkJob::sendRequestWithCredentials):
(WebCore::NetworkJob::notifyChallengeResult):
(WebCore):
* platform/network/blackberry/NetworkJob.h:
(WebCore):
(NetworkJob):

Source/WebKit/blackberry:

Use new AuthenticationChallengeClient interface to make authentication
challenge asynchronous to NetworkJob, MediaPlayerPrivateBlackBerry, and
other module that will use HTTP authentication. WebPage itself still use
synchronous authentication though. Switching to asynchronous authentication
in WebPage will require bigger platform layer change and not very necessary
at the moment for this bug.

* Api/WebPage.cpp:
(BlackBerry::WebKit::WebPagePrivate::authenticationChallenge):
* Api/WebPage_p.h:
(WebCore):
(WebPagePrivate):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@127884 268f45cc-cd09-0410-ab3c-d52691b4dbfc