Bug 984497 - Use SpecialPowers more and change SpecialPower usage to deal with Window on WebIDL bindings. r=bz.

--HG--
rename : content/media/webspeech/synth/test/test_setup.html => content/media/webspeech/synth/test/file_setup.html
rename : content/media/webspeech/synth/test/test_speech_queue.html => content/media/webspeech/synth/test/file_speech_queue.html
rename : content/media/webspeech/synth/test/test_speech_simple.html => content/media/webspeech/synth/test/file_speech_simple.html
extra : rebase_source : 687daf9d78e69fe6ae21f7c1a26503cf88a18b97
Bug 990475 - Add WebIDL APIs for WindowModal. r=bz.

--HG--
rename : content/media/webspeech/synth/test/test_setup.html => content/media/webspeech/synth/test/file_setup.html
rename : content/media/webspeech/synth/test/test_speech_queue.html => content/media/webspeech/synth/test/file_speech_queue.html
rename : content/media/webspeech/synth/test/test_speech_simple.html => content/media/webspeech/synth/test/file_speech_simple.html
extra : rebase_source : c2d23e5c973c117ab3fb66b2a98a451acfabc7e5