Revert of Fix gn check error (patchset #1 id:1 of https://codereview.chromium.org/1279553002/ )
Revert of Fix gn check error (patchset #1 id:1 of https://codereview.chromium.org/1279553002/ )

Reason for revert:
My original patch https://codereview.chromium.org/1262173005/ , broke MediaRouterMojoImplTest.QueuedWhileAsleep on linux debug. I'm reverting this as this builds on the other patch.

Original issue's description:
> Fix gn check error
>
> Android BUILD.gn files needed to be updated because of moving of files.
>
> BUG=none
> TEST=none
> R=jam@chromium.org
> TBR=jam@chromium.org
>
> Committed: https://crrev.com/c9cc182781484f9010f062859cda048afefe5425
> Cr-Commit-Position: refs/heads/master@{#341992}

TBR=jam@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=none

Review URL: https://codereview.chromium.org/1278653002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#342013}

CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,ltilve/ChromiumGStreamerBackend,CapOM/ChromiumGStreamerBackend