Convert GrClip to an abstract base class

src/gpu/GrYUVProvider.cpp

Index: src/gpu/GrYUVProvider.cpp
diff --git a/src/gpu/GrYUVProvider.cpp b/src/gpu/GrYUVProvider.cpp
index 970644d0f48e4da16aefa49a499cce453caa134d..a7281da27b2e740ffafdea57aa8a0043b74c8193 100644
--- a/src/gpu/GrYUVProvider.cpp
+++ b/src/gpu/GrYUVProvider.cpp
@@ -147,7 +147,7 @@ sk_sp<GrTexture> GrYUVProvider::refAsTexture(GrContext* ctx,
     const SkRect r = SkRect::MakeIWH(yuvInfo.fSizeInfo.fSizes[SkYUVSizeInfo::kY].fWidth,
             yuvInfo.fSizeInfo.fSizes[SkYUVSizeInfo::kY].fHeight);
 
-    drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), r);
+    drawContext->drawRect(GrNoClip(), paint, SkMatrix::I(), r);
 
     return drawContext->asTexture();
 }