Reland of [Chromecast] Centralize all system sounds to be include in cast_shell.pak (patchset #1 id:1 of https://codereview.chromium.org/1304053008/ )
Reland of [Chromecast] Centralize all system sounds to be include in cast_shell.pak (patchset #1 id:1 of https://codereview.chromium.org/1304053008/ )

Reason for revert:
Downstream CL is now ready, so this won't shouldn't break builds.

Original issue's description:
> Revert of [Chromecast] Centralize all system sounds to be include in cast_shell.pak (patchset #3 id:40001 of https://codereview.chromium.org/1305063004/ )
>
> Reason for revert:
> This will break builds downstream until another CL is ready. Reverting until that CL ready.
>
> Original issue's description:
> > [Chromecast] Centralize all system sounds to be include in cast_shell.pak
> >
> > BUG= b/21666790
> >
> > Committed: https://crrev.com/8729281ad988a33a2b4e02c9a97650e5867cd804
> > Cr-Commit-Position: refs/heads/master@{#344887}
>
> TBR=gunsch@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG= b/21666790
>
> Committed: https://crrev.com/c77fb33a827b5e7557902f57a5aedfe3d115aa4b
> Cr-Commit-Position: refs/heads/master@{#344938}

TBR=gunsch@chromium.org,lcwu@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG= b/21666790

Review URL: https://codereview.chromium.org/1309073002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#345133}

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