GitLab

Texture::Update() was doing a lot of calculations that did not change
much per frame. Some of the calculations such as whether or not has
non-power of 2 dimensions has been moved to when the texture
levels are set since they do not change. Others are only recalculated
when a dirty bit is set.

BUG=420152
TEST=trybots

Review URL: https://codereview.chromium.org/633773002

Cr-Commit-Position: refs/heads/master@{#299181}