Move non-gencode `onDumpInfo` methods to private section.

`onXxxxx` methods in Skia are generally intended to be non-public.

Change-Id: I26b6bdcee653f41a22c91f79d01b20a274210747
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/309981
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/ops/GrRegionOp.cpp b/src/gpu/ops/GrRegionOp.cpp
index 6a3818a..ec723a2 100644
--- a/src/gpu/ops/GrRegionOp.cpp
+++ b/src/gpu/ops/GrRegionOp.cpp
@@ -72,19 +72,6 @@
         }
     }
 
-#if GR_TEST_UTILS
-    SkString onDumpInfo() const override {
-        SkString str = SkStringPrintf("# combined: %d\n", fRegions.count());
-        for (int i = 0; i < fRegions.count(); ++i) {
-            const RegionInfo& info = fRegions[i];
-            str.appendf("%d: Color: 0x%08x, Region with %d rects\n", i, info.fColor.toBytes_RGBA(),
-                        info.fRegion.computeRegionComplexity());
-        }
-        str += fHelper.dumpInfo();
-        return str;
-    }
-#endif
-
     FixedFunctionFlags fixedFunctionFlags() const override { return fHelper.fixedFunctionFlags(); }
 
     GrProcessorSet::Analysis finalize(
@@ -179,6 +166,19 @@
         return CombineResult::kMerged;
     }
 
+#if GR_TEST_UTILS
+    SkString onDumpInfo() const override {
+        SkString str = SkStringPrintf("# combined: %d\n", fRegions.count());
+        for (int i = 0; i < fRegions.count(); ++i) {
+            const RegionInfo& info = fRegions[i];
+            str.appendf("%d: Color: 0x%08x, Region with %d rects\n", i, info.fColor.toBytes_RGBA(),
+                        info.fRegion.computeRegionComplexity());
+        }
+        str += fHelper.dumpInfo();
+        return str;
+    }
+#endif
+
     struct RegionInfo {
         SkPMColor4f fColor;
         SkRegion fRegion;