Bug 1114600 - Get rid of unnecessary reader enabled flag in Java. r=rnewman

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extra : rebase_source : c24b01b19323840694ef472bf12b71abb552c33d
Bug 1114589 - Add compatibility layer for Uri.getQueryParameterNames. r=rnewman

--HG--
extra : rebase_source : 3b7d1fa11409cf3de9855df3a6575319b5a6f93c
Bug 1113844 - Fix parameters in showInAboutDownloads call. r=mfinkle

--HG--
extra : rebase_source : 242b937e4722c4231eac183a3910f665f898c588