Testing has shown that there is a hit testing bug for embedded (<embed>) PDF's. Full page PDFs (at any scale) do work properly. This can be seen in the TestWebKitAPI 'ActionMenuTest' suite.
<rdar://problem/20677770>
There was an error in the recent PDF positioning calculations I made. I have a local fix, but it is based on the code in Bug 143952.
Created attachment 251570 [details] Patch
Attachment 251570 [details] did not pass style-queue: ERROR: Tools/TestWebKitAPI/Tests/WebKit2ObjC/ActionMenus.mm:738: Place brace on its own line for function definitions. [whitespace/braces] [4] Total errors found: 1 in 6 files If any of these errors are false positives, please file a bug against check-webkit-style.
Committed r183282: <http://trac.webkit.org/changeset/183282>