Cache render targets that render to wrapped textures

src/gpu/gl/GrGLTransferBuffer.h

Index: src/gpu/gl/GrGLTransferBuffer.h
diff --git a/src/gpu/gl/GrGLTransferBuffer.h b/src/gpu/gl/GrGLTransferBuffer.h
index e01d4447df2284d32641cdcf43b22912c6b1ae57..7381e2c850a7f929a9da2750c9e79081199836c7 100755
--- a/src/gpu/gl/GrGLTransferBuffer.h
+++ b/src/gpu/gl/GrGLTransferBuffer.h
@@ -28,6 +28,7 @@ public:
 protected:
     void onAbandon() override;
     void onRelease() override;
+    bool refsWrappedResources() const override { return false; }
     void setMemoryBacking(SkTraceMemoryDump* traceMemoryDump,
                           const SkString& dumpName) const override;