Preliminary support for Windows manifests in the GN build.

Preliminary support for Windows manifests in the GN build.

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

Committed: https://crrev.com/2e2220c02f2bbd3116b7b718aad627f37ad59b92
Cr-Commit-Position: refs/heads/master@{#339709}

[brettw, 2015-07-21 18:14:16]

brettw@chromium.org changed reviewers:
+ dpranke@chromium.org

[brettw, 2015-07-21 18:14:16]

This i sthe same as the previous one but doesn't change the GYP build
(previously cloud print and remoting were updated).

[brettw, 2015-07-21 18:14:30]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2015-07-21 18:16:02]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1238293005/1

[commit-bot: I haz the power, 2015-07-21 18:56:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-21 18:57:53]

Patchset 1 (id:??) landed as
https://crrev.com/2e2220c02f2bbd3116b7b718aad627f37ad59b92
Cr-Commit-Position: refs/heads/master@{#339709}

[Dirk Pranke, 2015-07-21 19:26:29]

rs lgtm