This test replaces platform/win/plugins/plugin-delayed-destroy.html.
That test was made to prevent a crash very similar to this one, but
unfortunately tested only the mechanism that prevented the crash and
not whether the crash itself was prevented. Since WebKit2 uses a
different mechanism to prevent the crash, the test was failing even
though WebKit2 was not vulnerable to the crash. This new test crashes
if there is no mechanism in place to prevent it and passes in both
WebKit1 and WebKit2.

Fixes <http://webkit.org/b/46711> <rdar://problem/8485903>
platform/win/plugins/plugin-delayed-destroy.html fails in WebKit2

Reviewed by Anders Carlsson.

WebKitTools:

* DumpRenderTree/DumpRenderTree.xcodeproj/project.pbxproj:
* DumpRenderTree/TestNetscapePlugIn/win/TestNetscapePlugin.vcproj:
* DumpRenderTree/qt/TestNetscapePlugin/TestNetscapePlugin.pro:
* GNUmakefile.am:
Added new file.

* DumpRenderTree/TestNetscapePlugIn/PluginObject.cpp:
(pluginDeallocate): Make sure we delete the PluginTest object. This
prevents a leak and also allows us to test the crash.

* DumpRenderTree/TestNetscapePlugIn/PluginTest.cpp:
(PluginTest::executeScript): Made this into a non-static member
function.

(PluginTest::waitUntilDone):
(PluginTest::notifyDone):
Updated for changes to executeScript.

* DumpRenderTree/TestNetscapePlugIn/PluginTest.h: Added executeScript.

* DumpRenderTree/TestNetscapePlugIn/Tests/EvaluateJSAfterRemovingPluginElement.cpp: Added.
(EvaluateJSAfterRemovingPluginElement::EvaluateJSAfterRemovingPluginElement):
Initialize ourselves and tell the test harness to wait.
(EvaluateJSAfterRemovingPluginElement::NPP_DestroyStream): Remove our
plugin element from the document, then execute some JavaScript. If
WebKit does not have appropriate mechanisms in place, we'll be
destroyed inside the first call to executeScript and crash on the
second call.

LayoutTests:

* platform/mac/Skipped: Added the new test, which fails in WebKit1 on SnowLeopard.

* platform/win-wk2/Skipped: Removed platform/win/plugins/plugin-delayed-destroy.html.

* platform/win/plugins/plugin-delayed-destroy-expected.txt: Removed.
* platform/win/plugins/plugin-delayed-destroy.html: Removed.

* plugins/evaluate-js-after-removing-plugin-element-expected.txt: Added.
* plugins/evaluate-js-after-removing-plugin-element.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71249 268f45cc-cd09-0410-ab3c-d52691b4dbfc