bug 1096132 rename UnscaledAppUnitsPerDevPixel() to AppUnitsPerDevPixelAtUnitFullZoom() r=tn

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extra : rebase_source : 220ede5d449a752c16064bb77905bc68af3df707
bug 1096132 rename UpdateScaledAppUnits() to UpdateAppUnitsForFullZoom() r=tn

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extra : rebase_source : d8fee82d9740fc0067d7b9a6e3d6d82fbbb85db0
bug 1096132 rename nsDeviceContext PixelScale to FullZoom r=tn

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extra : rebase_source : b78ffe7ffddf47a9646c1766626f48aed67ebb09
bug 1085247 ignore unstable results of subtests using mediasource_truncated_duration_seek_test

for intermittent
'assert_equals: Event types match. expected "seeking" but got "timeupdate"'

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extra : rebase_source : 0db7cb2ba0adf60955d8c9e97c6ece040bd7624e
bug 976927 support nsAutoTArray::operator=(const nsTArray&) r=froydnj

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extra : rebase_source : 9835cd5b05427611d5e490eee88602b2578dc0b8
bug 976927 use nsAutoTArray operator= from nsTArray r=froydnj

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extra : rebase_source : 59226888a19e525f4925eabdd93d08bfa7db13a9