First steps for creating build/install-build-deps.py
First steps for creating build/install-build-deps.py

Supports just --quick-check for now.

BUG=508895
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/1232073003 .

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#338488}

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