Workaround for bug in Tegra 3 when uploading to a render target

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1703603002

Review URL: https://codereview.chromium.org/1703603002
diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp
index 2568e56..4fb05c1 100644
--- a/src/gpu/GrCaps.cpp
+++ b/src/gpu/GrCaps.cpp
@@ -115,6 +115,7 @@
     fDrawPathMasksToCompressedTextureSupport = options.fDrawPathToCompressedTexture;
     fGeometryBufferMapThreshold = options.fGeometryBufferMapThreshold;
     fUseDrawInsteadOfPartialRenderTargetWrite = options.fUseDrawInsteadOfPartialRenderTargetWrite;
+    fUseDrawInsteadOfAllRenderTargetWrites = false;
 
     fPreferVRAMUseOverFlushes = true;
 }