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/src/gpu/GrBackendTextureImageGenerator.h b/src/gpu/GrBackendTextureImageGenerator.h
index 13b89da..cea0f40 100644
--- a/src/gpu/GrBackendTextureImageGenerator.h
+++ b/src/gpu/GrBackendTextureImageGenerator.h
@@ -9,6 +9,7 @@
 
 #include "include/core/SkImageGenerator.h"
 #include "include/gpu/GrBackendSurface.h"
+#include "include/gpu/GrRecordingContext.h"
 #include "include/private/GrResourceKey.h"
 #include "include/private/SkMutex.h"
 #include "src/gpu/GrTexture.h"