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This moves the views-related dependencies (including chrome/app/theme)
out of the top-level //apps static library.

Some DEPS includes were dropped entirely as they are no longer used in
//apps.

BUG=679971
R=benwells@chromium.org

Review-Url: https://codereview.chromium.org/2820563004
Cr-Commit-Position: refs/heads/master@{#469549}