Bug 848587 - Avoid racing on isHeapBusy (r=terrence)

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extra : rebase_source : 1667f00b8233d190ca74740b125e8de033c7d8dd
Bug 848602 - Add some volatile annotations (r=terrence)
Bug 843919 - Disable full compartment checks by default (r=jonco)
Bug 847620 - Tapping the browser should hide the Metro pop-up blocker notification [r=rsilveira]
Bug 847984 - Metro icon for pop-up blocker notifications [r=rsilveira]
Bug 849271 - Update strings for Metro popup blocker notifications [r=rsilveira]
Bug 849114: Add parser support for spatial media fragments. r=cpearce

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rename : content/html/content/src/nsMediaFragmentURIParser.cpp => netwerk/base/src/nsMediaFragmentURIParser.cpp
rename : content/html/content/src/nsMediaFragmentURIParser.h => netwerk/base/src/nsMediaFragmentURIParser.h