Use Skia's legacy GPU read/write pixel functions until new code paths

are more thoroughly vetted.



Change-Id: I4462bb8e6749f907dd6b5dc933fdbf01b62456cd
Reviewed-on: https://chromium-review.googlesource.com/935427Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#539259}

skia/config/SkUserConfig.h

@@ -212,6 +212,11 @@ SK_API void SkDebugf_FileLine(const char* file, int line, bool fatal,
 #define SK_SUPPORT_LEGACY_SVG_ARC_TO
 #endif
 
+// Remove after M66 branch to use new read/writePixels implementations
+#ifndef SK_LEGACY_GPU_PIXEL_OPS
+#define SK_LEGACY_GPU_PIXEL_OPS
+#endif
+
 // Max. verb count for paths rendered by the edge-AA tessellating path renderer.
 #define GR_AA_TESSELLATOR_MAX_VERB_COUNT 10