Unreviewed, rolling out r145254, r145264, and r145288.
http://trac.webkit.org/changeset/145254
http://trac.webkit.org/changeset/145264
http://trac.webkit.org/changeset/145288
https://bugs.webkit.org/show_bug.cgi?id=111917

Test breakage hints at conceptual unsoundness (Requested by ap
on #webkit).

Patch by Sheriff Bot <webkit.review.bot@gmail.com> on 2013-03-08

Source/WebKit2:

* NetworkProcess/SchedulableLoader.cpp:
(WebKit::SchedulableLoader::invalidateSandboxExtensions):
* Shared/Downloads/Download.cpp:
(WebKit::Download::didFinish):
(WebKit::Download::didFail):
(WebKit::Download::didCancel):
* Shared/SandboxExtension.h:
(SandboxExtension):
(WebKit::SandboxExtension::invalidate):
* Shared/WebMemorySampler.cpp:
(WebKit::WebMemorySampler::stop):
* Shared/mac/SandboxExtensionMac.mm:
(WebKit::SandboxExtension::SandboxExtension):
(WebKit::SandboxExtension::invalidate):
(WebKit::SandboxExtension::consume):
* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::performDragControllerAction):
(WebKit::WebPage::SandboxExtensionTracker::invalidate):
(WebKit::WebPage::SandboxExtensionTracker::setPendingProvisionalSandboxExtension):
(WebKit::WebPage::SandboxExtensionTracker::didCommitProvisionalLoad):
(WebKit::WebPage::SandboxExtensionTracker::didFailProvisionalLoad):

LayoutTests:

* platform/mac-wk2/TestExpectations:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145300 268f45cc-cd09-0410-ab3c-d52691b4dbfc