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/include/gpu/GrCaps.h b/include/gpu/GrCaps.h
index fc68206..e2e44a5 100644
--- a/include/gpu/GrCaps.h
+++ b/include/gpu/GrCaps.h
@@ -151,6 +151,10 @@
         return fUseDrawInsteadOfPartialRenderTargetWrite;
     }
 
+    bool useDrawInsteadOfAllRenderTargetWrites() const {
+        return fUseDrawInsteadOfAllRenderTargetWrites;
+    }
+
     bool preferVRAMUseOverFlushes() const { return fPreferVRAMUseOverFlushes; }
 
     /**
@@ -280,6 +284,7 @@
     // Driver workaround
     bool fUseDrawInsteadOfClear                      : 1;
     bool fUseDrawInsteadOfPartialRenderTargetWrite   : 1;
+    bool fUseDrawInsteadOfAllRenderTargetWrites      : 1;
 
     // ANGLE workaround
     bool fPreferVRAMUseOverFlushes                   : 1;