Revert "Disable bookmaker CLs automatic CQ+2 for now"
Revert "Disable bookmaker CLs automatic CQ+2 for now"

This reverts commit 63fac808ee5a6b33f15de2aa54a507a1334a053e.

Reason for revert: Fiddle problem seems to be fixed

Original change's description:
> Disable bookmaker CLs automatic CQ+2 for now
> 
> Disable till problem described in
> https://bugs.chromium.org/p/skia/issues/detail?id=8151#c8 is fixed
> 
> Bug: skia:8151
> Change-Id: Ie726829f3b13b587e14192dbf0104d04934a18dc
> Reviewed-on: https://skia-review.googlesource.com/142503
> Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
> Reviewed-by: Cary Clark <caryclark@google.com>
> Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

TBR=9fa2e7438b8cb730f96b74865492597170561628@google.com,caryclark@google.com

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: skia:8151
Change-Id: If09f3ab783d3b616bc96ba8994e6220039f6fc00
Reviewed-on: https://skia-review.googlesource.com/145324
Reviewed-by: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

rubenvb/skia,rubenvb/skia,HalCanary/skia-hc,HalCanary/skia-hc,HalCanary/skia-hc,rubenvb/skia,rubenvb/skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,rubenvb/skia,rubenvb/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,Hikari-no-Tenshi/android_external_skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,Hikari-no-Tenshi/android_external_skia,rubenvb/skia,google/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,rubenvb/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,rubenvb/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,rubenvb/skia,google/skia,HalCanary/skia-hc,google/skia,Hikari-no-Tenshi/android_external_skia,HalCanary/skia-hc,HalCanary/skia-hc,Hikari-no-Tenshi/android_external_skia