Migrate createObjectURL & revokeObjectURL to static (Class) methods.

Migrate createObjectURL & revokeObjectURL to static (Class) methods.
https://bugs.webkit.org/show_bug.cgi?id=74386

Patch by Kaustubh Atrawalkar <kaustubh@motorola.com> on 2012-02-07
Reviewed by David Levin.

Source/WebCore:

Test: fast/dom/DOMURL/check-instanceof-domurl-functions.html
Already Existing:
    fast/files/revoke-blob-url.html
    fast/dom/window-domurl-crash.html
    fast/files/apply-blob-url-to-img.html
    fast/files/create-blob-url-crash.html
    fast/files/workers/inline-worker-via-blob-url.html

* dom/ScriptExecutionContext.cpp:
(WebCore::ScriptExecutionContext::fileThread):
(WebCore):
(WebCore::ScriptExecutionContext::publicURLManager):
* dom/ScriptExecutionContext.h:
(WebCore):
(ScriptExecutionContext):
* html/DOMURL.cpp:
(WebCore):
(WebCore::DOMURL::createObjectURL): Changed to static.
(WebCore::DOMURL::revokeObjectURL): ditto.
* html/DOMURL.h:
(DOMURL):
(WebCore::DOMURL::create):
* html/DOMURL.idl:
* html/PublicURLManager.h: Added.
(WebCore):
(PublicURLManager):
(WebCore::PublicURLManager::create):
(WebCore::PublicURLManager::contextDestroyed):
(WebCore::PublicURLManager::blobURLs):
(WebCore::PublicURLManager::streamURLs):
* page/DOMWindow.cpp: Removed object initialization for DOMURL.
(WebCore):
* page/DOMWindow.h: ditto.
(DOMWindow):
* page/DOMWindow.idl:
* workers/WorkerContext.cpp:
(WebCore):
* workers/WorkerContext.h:
(WorkerContext):
* workers/WorkerContext.idl:

LayoutTests:

Added test to check if createObjectURL & revokeObjectURL are static functions.

* fast/dom/DOMURL/check-instanceof-domurl-functions-expected.txt: Added.
* fast/dom/DOMURL/check-instanceof-domurl-functions.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@106912 268f45cc-cd09-0410-ab3c-d52691b4dbfc