Revert "Temporarily disable reduceOpsTaskSplitting on bots"

This reverts commit 9604eab2bdcaf2c207bb96ee5959c874cd172e79.

Reason for revert: Got perf data

Original change's description:
> Temporarily disable reduceOpsTaskSplitting on bots
>
> When we enabled this, at that time CCPR atlasing would
> auto-disable when reordering was enabled, so the perf
> impact was unclear.
>
> Since then, CCPR atlasing has been disabled for everyone,
> so let's flip this flag, get some perf data, and then flip it back.
>
> Bug: skia:10877
> Change-Id: I67f081981e84c573dfc2907018b50c740f3a32cc
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411216
> Auto-Submit: Adlai Holler <adlai@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com,robertphillips@google.com,adlai@google.com

Change-Id: Ic90be563da759b48f5aa3d9c951cfb76439ce604
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:10877
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/411298
Reviewed-by: Adlai Holler <adlai@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Adlai Holler <adlai@google.com>
diff --git a/tools/flags/CommonFlagsGpu.cpp b/tools/flags/CommonFlagsGpu.cpp
index 9613dff..e1fc75d 100644
--- a/tools/flags/CommonFlagsGpu.cpp
+++ b/tools/flags/CommonFlagsGpu.cpp
@@ -103,5 +103,9 @@
     ctxOptions->fDisableDriverCorrectnessWorkarounds = FLAGS_disableDriverCorrectnessWorkarounds;
     ctxOptions->fResourceCacheLimitOverride          = FLAGS_gpuResourceCacheLimit;
 
-    ctxOptions->fReduceOpsTaskSplitting = GrContextOptions::Enable::kNo;
+    if (FLAGS_dontReduceOpsTaskSplitting) {
+        ctxOptions->fReduceOpsTaskSplitting = GrContextOptions::Enable::kNo;
+    } else {
+        ctxOptions->fReduceOpsTaskSplitting = GrContextOptions::Enable::kYes;
+    }
 }