DescriptionMac: Fix renderer idle cpu usage regression.
Since polling is required only for the preferred height and mac only needs preferred width, add a flag that specifies if the client is interested in width and/or height.
This is a band-aid, the Real Fix is tracked in 44850.
BUG=44494
TEST=Open chrome's task manager. Idle renderer processes should take close to 0 %cpu instead of ~1.5 before.
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=48056
Patch Set 1 #Patch Set 2 : '' #Patch Set 3 : '' #Patch Set 4 : rebase #
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