tree a84f0dfd22e9b229bb4bca1c7350ad0eb5838520
parent e3f29871e9fe631e460c07db8fc4021a5eeeec90
author Adam Barth <abarth@chromium.org> 1528527592 -0700
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1528743424 +0000

[cprng] Remove short reads from zx_cprng_draw

We never actually generate short reads from zx_cprng_draw. This CL
removes the |actual| out parameter. Now zx_cprng_draw either fails or
succeeds in drawing the amount requested, simplifying clients and
removing possible mistakes.

This CL is phase 1 of the transition, which introduces the new version as
zx_cprng_draw_new. Once all the clients are migrated, we'll change
zx_cprng_draw itself, migrate all the clients back, and then remove
zx_cprng_draw_new.

Change-Id: I2219d0517f103fb999014de1e846fa8b8a5ca20c