GitLab

Add escapes for special characters in param names and values.

This is a reland of efbdaef4

Original change's description:
> flags: Add support for FEATURE_WITH_PARAMS_VALUE_TYPE feature in switches
>
> Fixed:805766
> Test:autoninja -C out/mychrome components_tests && ./out/mychrome
> components_tests
> TESTED=autoninja -C out_hatch/Release chrome && deploy_chrome
> --build-dir=out_hatch/Release --device=$DUT
>
> Verified by setting a feature with param in chrome://flags on hatch
>
> Change-Id: I83f8c81237c3db50a4f23bf5b17e73363bf10504
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401336
> Commit-Queue: Weilun Shi <sweilun@chromium.org>
> Reviewed-by: Weilun Shi <sweilun@chromium.org>
> Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#806278}

Change-Id: If059b946bd8596aebec440e14e5f6a8a66b222da
Fixed: 1130035
Bug: 805766
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2419636
Auto-Submit: Joon Ahn <joonbug@chromium.org>
Reviewed-by: Weilun Shi <sweilun@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: Tommy Li <tommycli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#808975}