Revert of Content "gn check" work. (patchset #10 id:180001 of https://codereview.chromium.org/1828483002/ )

Reason for revert:
Broke https://build.chromium.org/p/chromium.win/builders/Win%20x64%20GN%20%28dbg%29/builds/19740/steps/compile/logs/stdio

Original issue's description:
> Content "gn check" work.
>
> Make content/gpu and content/plugin pass GN check.
>
> Makes most of content/shell and content/test pass check. These are not all enabled yet pending a few remaining issues that are more difficult to solve.
>
> The private content targets now allow content/test to include headers from them for non-component builds. Checking is disabled for content/test in component builds as described in the comment at the top of //content/BUILD.gn
>
> Renames the ui/events/ipc according to GN style
>
> BUG=
> CQ_INCLUDE_TRYBOTS=tryserver.chromium.win:win_optional_gpu_tests_rel
> TBR=jschuh (IPC build tweak)
>
> Committed: https://crrev.com/f510be61306f5e4986eceb1f8686bfcc934cd400
> Cr-Commit-Position: refs/heads/master@{#383208}

TBR=jam@chromium.org,jschuh@chromium.org,dcheng@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Review URL: https://codereview.chromium.org/1836533002

Cr-Commit-Position: refs/heads/master@{#383289}

0 files changed, 0 insertions, 0 deletions