Bug 888927: make MOZ_TELEMETRY_ON_BY_DEFAULT depend on the channel-specific build defines, rather than on the update channel, r=khuey

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extra : transplant_source : %1E%9D4%0C%D5%99%C7%CF5zM%F0%0D%D9t%E4%FC%CB%15T
Bug 785487: have AboutHomeUtils use the asynchronous search API, r=mikedeboer

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extra : transplant_source : o%00%28%00%0A%F1%B4%97L%EA%82%D9%0E%1An%B9m%8B%2C%40