Jeff Brown 8e5d33ef98 Don't request traversals when updating display brightness.
Setting the display state and brightness does not require a surface
flinger transaction so don't schedule traversals unnecessarily.
They may still be scheduled as a side-effect of other operations
but only when needed.

Bug: 21296696
Change-Id: Ie264254ea1972c37319e5e5a06163d47f6689c22
2015-06-10 13:05:50 -07:00
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