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This reduces randomness in the build by making our dependency
sorting a stable sort.

Bug: 828528, 828508
Change-Id: Ibf0f1de0d77333cdee575560912728e47b8f292e
Reviewed-on: https://chromium-review.googlesource.com/994545
Commit-Queue: agrieve <agrieve@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548131}