Revert "Merge GrOpList and GrRTOpList and rename to GrOpsTask."

This reverts commit 2a5954140b49d18e5161a30a4ae2c7ac28bc1993.

Reason for revert: breaking everything

Original change's description:
> Merge GrOpList and GrRTOpList and rename to GrOpsTask.
> 
> Change-Id: I8f4f2218a30fd0541a8f79f7bb9850f9500cd243
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/236343
> Commit-Queue: Greg Daniel <egdaniel@google.com>
> Reviewed-by: Brian Salomon <bsalomon@google.com>

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

Change-Id: I27840ea0343e8e6b388556afb7bd2e76386d611d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/236349
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/GrLegacyDirectContext.cpp b/src/gpu/GrLegacyDirectContext.cpp
index dbdcd5c..ffd224d 100644
--- a/src/gpu/GrLegacyDirectContext.cpp
+++ b/src/gpu/GrLegacyDirectContext.cpp
@@ -28,9 +28,9 @@
 #endif
 
 #ifdef SK_DISABLE_REDUCE_OPLIST_SPLITTING
-static const bool kDefaultReduceOpsTaskSplitting = false;
+static const bool kDefaultReduceOpListSplitting = false;
 #else
-static const bool kDefaultReduceOpsTaskSplitting = false;
+static const bool kDefaultReduceOpListSplitting = false;
 #endif
 
 class GrLegacyDirectContext : public GrContext {
@@ -82,14 +82,14 @@
             return false;
         }
 
-        bool reduceOpsTaskSplitting = kDefaultReduceOpsTaskSplitting;
+        bool reduceOpListSplitting = kDefaultReduceOpListSplitting;
         if (GrContextOptions::Enable::kNo == this->options().fReduceOpListSplitting) {
-            reduceOpsTaskSplitting = false;
+            reduceOpListSplitting = false;
         } else if (GrContextOptions::Enable::kYes == this->options().fReduceOpListSplitting) {
-            reduceOpsTaskSplitting = true;
+            reduceOpListSplitting = true;
         }
 
-        this->setupDrawingManager(true, reduceOpsTaskSplitting);
+        this->setupDrawingManager(true, reduceOpListSplitting);
 
         SkASSERT(this->caps());