Add `GrProcessor::onDumpInfo` for subclass info dumps.

This CL also marks `GrProcessor::dumpInfo` as final. This prevents a
subclass from mistakenly overriding `dumpInfo` instead of `onDumpInfo`.

`onDumpInfo` is responsible for providing the same data as `dumpInfo`,
except that the FP name is automatically prepended.

Change-Id: I2b44c30a01bc65e9d88321cc21651a94e20074c6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/309793
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/effects/generated/GrRRectBlurEffect.cpp b/src/gpu/effects/generated/GrRRectBlurEffect.cpp
index 1839c66..78d71df 100644
--- a/src/gpu/effects/generated/GrRRectBlurEffect.cpp
+++ b/src/gpu/effects/generated/GrRRectBlurEffect.cpp
@@ -160,10 +160,9 @@
     return std::make_unique<GrRRectBlurEffect>(*this);
 }
 #if GR_TEST_UTILS
-SkString GrRRectBlurEffect::dumpInfo() const {
-    return SkStringPrintf("RRectBlurEffect(sigma=%f, rect=float4(%f, %f, %f, %f), cornerRadius=%f)",
-                          sigma, rect.left(), rect.top(), rect.right(), rect.bottom(),
-                          cornerRadius);
+SkString GrRRectBlurEffect::onDumpInfo() const {
+    return SkStringPrintf("(sigma=%f, rect=float4(%f, %f, %f, %f), cornerRadius=%f)", sigma,
+                          rect.left(), rect.top(), rect.right(), rect.bottom(), cornerRadius);
 }
 #endif
 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrRRectBlurEffect);