Wale Ogunwale 361ca21acc Added unique id to display devices and their settings.
The display setting saved to disk were using a localized name for
the key. This is an issue if the user changes languages after the
display settings have been saved. We now use the non-localized
name for the display to access the settings if it is available,
else we fall back on the localized name.

Bug: 18190800
Change-Id: I837c06a8935df10727229a1aa2bb6eeb3953707f
2014-11-26 13:40:52 -08:00
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