1. Go to http://www.longwood.edu/helpdesk/blackboard/Bbfiletypes/pdffiles.pdf
2. Resize the window
Adobe Reader doesn't paint until step 2.
Created attachment 69038 [details]
Don't call NPP_SetWindow until the plugin's HWND has been sized/positioned
Attachment 69038 [details] did not pass style-queue:
Failed to run "['WebKitTools/Scripts/check-webkit-style']" exit_code: 1
WebKitTools/DumpRenderTree/TestNetscapePlugIn/PluginTest.cpp:63: PluginTest::NPP_SetWindow is incorrectly named. Don't use underscores in your identifier names. [readability/naming] 
WebKitTools/DumpRenderTree/TestNetscapePlugIn/Tests/win/WindowGeometryInitializedBeforeSetWindow.cpp:26: Found other header before WebCore config.h. Should be: config.h, primary header, blank line, and then alphabetically sorted. [build/include_order] 
WebKitTools/DumpRenderTree/TestNetscapePlugIn/Tests/win/WindowGeometryInitializedBeforeSetWindow.cpp:28: Alphabetical sorting problem. [build/include_order] 
Total errors found: 3 in 11 files
If any of these errors are false positives, please file a bug against check-webkit-style.
Committed r68520: <http://trac.webkit.org/changeset/68520>