Bug 981470. Combine test_audioDocumentTitle and test_videoDocumentTitle and avoid testing WAV files, which aren't supposed to load properly in <iframe>s. r=cpearce

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rename : content/media/test/test_audioDocumentTitle.html => content/media/test/test_documentTitle.html
extra : rebase_source : 27016e8c3a15dcbfeb9462a17f27b043ac977d75
Bug 493692. Fix and reenable test_preload_suspend. r=cpearce

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extra : rebase_source : 947c7f65d071c62b57d7bf529a00cc72f9910345
Bug 791480. Make reftests enter print mode before reftest-wait is removed, so canvas-print-callback tests can finish drawing before the test ends. r=dbaron

--HG--
extra : rebase_source : c545bfbfd4a449c4e880052da0e1e046e37eaf83