plugins/netscape-plugin-setwindow-size*.html and plugins/pass-different-npp-struct.html should be async
https://bugs.webkit.org/show_bug.cgi?id=112478

Reviewed by Tony Chang.

There is nothing that ensures that the log messages from the plugin
come in before the layout test finished loading.

Tools:

* DumpRenderTree/TestNetscapePlugIn/Tests/PassDifferentNPPStruct.cpp:
(PassDifferentNPPStruct::NPP_SetWindow):
* DumpRenderTree/TestNetscapePlugIn/main.cpp:
(NPP_SetWindow):

LayoutTests:

* platform/mac-wk2/plugins/netscape-plugin-setwindow-size-2-expected.txt: Removed.
* plugins/netscape-plugin-setwindow-size-2.html:
* plugins/netscape-plugin-setwindow-size.html:
* plugins/pass-different-npp-struct.html:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@145967 268f45cc-cd09-0410-ab3c-d52691b4dbfc