Revert "Reland "Reland "[DevTools] Add a flag --enable-devtools-binary-protocol for DevToolsSession."""

This reverts commit 8f3ff47631cfdd7b80c37a859b68bb878c710fd8.

Reason for revert: Depends on reverted change https://chromium-review.googlesource.com/c/chromium/src/+/1522494

Original change's description:
> Reland "Reland "[DevTools] Add a flag --enable-devtools-binary-protocol for DevToolsSession.""
> 
> This is a reland of a741fa4abd37baa4d8618c27b5c8a3b5e0c53fcd
> 
> Original change's description:
> > Reland "[DevTools] Add a flag --enable-devtools-binary-protocol for DevToolsSession."
> > 
> > This is a reland of 6ab258258c8ba0c7ebda22756062abc720859b6a
> > 
> > Original change's description:
> > > [DevTools] Add a flag --enable-devtools-binary-protocol for DevToolsSession.
> > > 
> > > When the flag is enabled, we send messages to agents / handlers as CBOR,
> > > even if the cient sends us JSON. We convert responses back to JSON if
> > > needed.
> > > 
> > > Change-Id: I6123e38262d6eeb82206d28a936a32f7db8235b8
> > > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1507232
> > > Commit-Queue: Johannes Henkel <johannes@chromium.org>
> > > Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
> > > Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
> > > Cr-Commit-Position: refs/heads/master@{#638897}
> > 
> > Change-Id: I20975e3119d3ac65a3e4294ea7cf0bf2d9516389
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1512336
> > Reviewed-by: Johannes Henkel <johannes@chromium.org>
> > Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
> > Commit-Queue: Pavel Feldman <pfeldman@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#639164}
> 
> Change-Id: I94019b6915a99e6b101892c5b3d451718250ba53
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1521466
> Reviewed-by: Pavel Feldman <pfeldman@chromium.org>
> Commit-Queue: Johannes Henkel <johannes@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#640487}

TBR=dgozman@chromium.org,caseq@chromium.org,pfeldman@chromium.org,johannes@chromium.org

Change-Id: Ie10a272952b579fd168d2bf54978c31c95c22837
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1522496
Reviewed-by: Alice Boxhall <aboxhall@chromium.org>
Commit-Queue: Alice Boxhall <aboxhall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640618}
11 files changed