Bug 838955 (part 2) - Fix rooting hazards in jsstr.cpp identified by static analysis.  r=sfink.

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extra : rebase_source : 7a2de0680f6f82a0c40bea46a520af1a5ad72fbc
Bug 838583 - Scale favicons in the history tab. r=mfinkle

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rename : dom/browser-element/BrowserElementChildPreload.js => dom/browser-element/BrowserElementChild.js
extra : rebase_source : f5b53cdab96e42b05c3299e043e8ff5a1111a70c
Bug 769872 - Add self-hosted JavaScript core of Intl constructors Collator, NumberFormat, DateTimeFormat (part 7). r=jwalden
Bug 821695 - Do not load videocontrols.xml if the audio/video tag does not need it. r=roc

--HG--
extra : rebase_source : 567194ec6ee1862af1d7988aa9a0c3b50f07788a