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/gradients/generated/GrTwoPointConicalGradientLayout.cpp b/src/gpu/gradients/generated/GrTwoPointConicalGradientLayout.cpp
index fb2bb00..42cc7c6 100644
--- a/src/gpu/gradients/generated/GrTwoPointConicalGradientLayout.cpp
+++ b/src/gpu/gradients/generated/GrTwoPointConicalGradientLayout.cpp
@@ -144,8 +144,9 @@
     SkPoint focalParamsPrev = SkPoint::Make(SK_FloatNaN, SK_FloatNaN);
     UniformHandle focalParamsVar;
 };
-GrGLSLFragmentProcessor* GrTwoPointConicalGradientLayout::onCreateGLSLInstance() const {
-    return new GrGLSLTwoPointConicalGradientLayout();
+std::unique_ptr<GrGLSLFragmentProcessor> GrTwoPointConicalGradientLayout::onMakeProgramImpl()
+        const {
+    return std::make_unique<GrGLSLTwoPointConicalGradientLayout>();
 }
 void GrTwoPointConicalGradientLayout::onGetGLSLProcessorKey(const GrShaderCaps& caps,
                                                             GrProcessorKeyBuilder* b) const {