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

include/gpu/GrCaps.h

Index: include/gpu/GrCaps.h
diff --git a/include/gpu/GrCaps.h b/include/gpu/GrCaps.h
index fc682069eac794bc88e9e57747f0c716890ad645..e2e44a5120a9cc5ee1bab6a14ddba793fa8b4aee 100644
--- a/include/gpu/GrCaps.h
+++ b/include/gpu/GrCaps.h
@@ -151,6 +151,10 @@ public:
         return fUseDrawInsteadOfPartialRenderTargetWrite;
     }
 
+    bool useDrawInsteadOfAllRenderTargetWrites() const {
+        return fUseDrawInsteadOfAllRenderTargetWrites;
+    }
+
     bool preferVRAMUseOverFlushes() const { return fPreferVRAMUseOverFlushes; }
 
     /**
@@ -280,6 +284,7 @@ protected:
     // Driver workaround
     bool fUseDrawInsteadOfClear                      : 1;
     bool fUseDrawInsteadOfPartialRenderTargetWrite   : 1;
+    bool fUseDrawInsteadOfAllRenderTargetWrites      : 1;
 
     // ANGLE workaround
     bool fPreferVRAMUseOverFlushes                   : 1;