GrRenderTargetContext->GrSurfaceDrawContext

Just the class/files. variable names and additional comments to follow.

Change-Id: Ic03d07fd5009eaf3d706c2536486a117328963fc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/342617
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/gm/rectangletexture.cpp b/gm/rectangletexture.cpp
index a95464f..2fa82a7 100644
--- a/gm/rectangletexture.cpp
+++ b/gm/rectangletexture.cpp
@@ -40,7 +40,7 @@
 #include <cstdint>
 #include <memory>
 
-class GrRenderTargetContext;
+class GrSurfaceDrawContext;
 
 namespace skiagm {
 class RectangleTexture : public GpuGM {
@@ -147,7 +147,7 @@
         fSmallImg = nullptr;
     }
 
-    DrawResult onDraw(GrRecordingContext*, GrRenderTargetContext*, SkCanvas* canvas,
+    DrawResult onDraw(GrRecordingContext*, GrSurfaceDrawContext*, SkCanvas* canvas,
                       SkString*) override {
         SkASSERT(fGradImgs[0] && fGradImgs[1] && fSmallImg);