Make GrGLSLFragmentProcessors be created as std::unique_ptr.

Rename factory function from createGLSLInstance() to makeProgramImpl()

Bug: b/180759848
Bug: skia:11358
Change-Id: I095bdf1f26db5a8192fa8ab59000db4a1d561d96
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/373738
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/effects/generated/GrAARectEffect.cpp b/src/gpu/effects/generated/GrAARectEffect.cpp
index 2c2ff04..28dc0f5 100644
--- a/src/gpu/effects/generated/GrAARectEffect.cpp
+++ b/src/gpu/effects/generated/GrAARectEffect.cpp
@@ -88,8 +88,8 @@
     SkRect prevRect = float4(0);
     UniformHandle rectUniformVar;
 };
-GrGLSLFragmentProcessor* GrAARectEffect::onCreateGLSLInstance() const {
-    return new GrGLSLAARectEffect();
+std::unique_ptr<GrGLSLFragmentProcessor> GrAARectEffect::onMakeProgramImpl() const {
+    return std::make_unique<GrGLSLAARectEffect>();
 }
 void GrAARectEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
                                            GrProcessorKeyBuilder* b) const {