[BlackBerry] Add ability for DRT to handle HTTP authentication challenges.

[BlackBerry] Add ability for DRT to handle HTTP authentication challenges.
https://bugs.webkit.org/show_bug.cgi?id=84031

Patch by Jonathan Dong <jonathan.dong@torchmobile.com.cn> on 2012-04-16
Reviewed by Rob Buis.

Source/WebKit/blackberry:

Added the interface function didReceivedAuthenticaitonChallenge()
in interface class DumpRenderTreeClient;
Called m_dumpRenderTree->didReceiveAuthenticationChallenge() in
WebPagePrivate::authenticationChallenge() when DRT is enabled.

Test: reuse existing test cases:
http/tests/loading/basic-credentials-sent-automatically.html
http/tests/loading/basic-auth-resend-wrong-credentials.html

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

Tools:

Implemented interface function didReceiveAuthenticationChallenge in class
DumpRenderTree.

* DumpRenderTree/blackberry/DumpRenderTree.cpp:
(drtCredentialDescription):
(BlackBerry::WebKit::DumpRenderTree::didReceiveAuthenticationChallenge):
(WebKit):
* DumpRenderTree/blackberry/DumpRenderTreeBlackBerry.h:
(WebCore):
(DumpRenderTree):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114263 268f45cc-cd09-0410-ab3c-d52691b4dbfc