More framework support for TransferBuffers

src/gpu/GrTest.cpp

Index: src/gpu/GrTest.cpp
diff --git a/src/gpu/GrTest.cpp b/src/gpu/GrTest.cpp
index 98ebe0621ea6609a73fbf61d6f94a2a04401f84c..c28fe6e2872b2d0db6ee1f9d783ad908b9122249 100644
--- a/src/gpu/GrTest.cpp
+++ b/src/gpu/GrTest.cpp
@@ -337,6 +337,13 @@ private:
         return false;
     }
 
+    bool onTransferPixels(GrSurface* surface,
+                          int left, int top, int width, int height,
+                          GrPixelConfig config, GrTransferBuffer* buffer,
+                          size_t offset, size_t rowBytes) override {
+        return false;
+    }
+
     void onResolveRenderTarget(GrRenderTarget* target) override { return; }
 
     GrStencilAttachment* createStencilAttachmentForRenderTarget(const GrRenderTarget*,