Bug 1052545 - Telemetry experiment branches are not saved correctly: we set the _dirty flag correctly, but then don't write the cache, r=gfritzsche

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extra : rebase_source : 8b531590cb76292b39c83d3928fc0107f1e83424
Bug 1054014 - Build bustage in nsTextStore because the end of GetGUIDNameStrWithTable doesn't return a value, r=masayuki

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extra : rebase_source : ef919c1580bd92b74b63bdb39b2926ed199c8563
Bug 1053836 - Fix subclassing of prefix loggers by only overriding the log() method, not all the other methods. This fixes `this` resolution in the Experiment log override, r=gps

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extra : rebase_source : fd81dc1a5aa15b4b1e57413991a787a463b42945