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Update the list of included unit tests on iOS to list all the components
that are built on iOS (based on the list in components/components.gyp).
Use an exclusion to remove all tests that depends on //content.

Sort the list of gypi files included by components.gyp.

BUG=462585

Review URL: https://codereview.chromium.org/963683003

Cr-Commit-Position: refs/heads/master@{#318701}