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This CL :
  * deletes is_hidden
  * computes if a layer is drawn using the effect tree

BUG=575413
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

patch from issue 1588093004 at patchset 250001 (http://crrev.com/1588093004#ps250001)

Review URL: https://codereview.chromium.org/1633203002

Cr-Commit-Position: refs/heads/master@{#371807}