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Adds manifest data for content shell. The result matches the GYP build.

Attaches a default manifest to all tests in the GN build. The GYP build's tests have manifests that specify elevation only. In GN it also specifies Windows and common control compat that matches what we ship with Chrome.

BUG=510612
TBR=dpranke@chromium.org
Reland of https://codereview.chromium.org/1240893004/ with no cloud print or remoting changes

Review URL: https://codereview.chromium.org/1238293005

Cr-Commit-Position: refs/heads/master@{#339709}