Revert "Update DevTools DEPS."
Revert "Update DevTools DEPS."

This reverts commit 250421609eddb3e2c7e6a9d288897572308c1c9f.

Reason for revert: gclient sync failures on mac after this CL

Original change's description:
> Update DevTools DEPS.
>
> Rolling build: https://chromium.googlesource.com/chromium/src/build/+log/c4d6615..920723c
>
> Rolling buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/d8c3754..e1471b2
>
> Rolling third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/f0bc2d2..5762930
>
> R=​machenbach@chromium.org,liviurau@chromium.org
>
> Bug: none
> Change-Id: I7a125483bed63fe48ebcc01a0e6533d689a45c24
> Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3541467
> Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
> Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>

Bug: none
Change-Id: I6c428602ec9b0a119d7db8c5bf9ddf149ab8ec7f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3541304
Auto-Submit: Eric Leese <b4befed3d60c01ea229cdb14329781bec1b07e7f@chromium.org>
Bot-Commit: Rubber Stamper <d516c4cc2192058ab8dae3d306acbdaf2ce6574f@appspot.gserviceaccount.com>
Reviewed-by: Eric Leese <b4befed3d60c01ea229cdb14329781bec1b07e7f@chromium.org>
Owners-Override: Eric Leese <b4befed3d60c01ea229cdb14329781bec1b07e7f@chromium.org>
Commit-Queue: Eric Leese <b4befed3d60c01ea229cdb14329781bec1b07e7f@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend