Distance field fixes for Android

src/gpu/gl/GrGLCaps.h

Index: src/gpu/gl/GrGLCaps.h
diff --git a/src/gpu/gl/GrGLCaps.h b/src/gpu/gl/GrGLCaps.h
index 7f0c8874ca2e441245c98aabb21d44ab931e6d10..0939f80c26562909f8b250e695d7684d19f5e3d5 100644
--- a/src/gpu/gl/GrGLCaps.h
+++ b/src/gpu/gl/GrGLCaps.h
@@ -250,6 +250,8 @@ public:
 
     bool fullClearIsFree() const { return fFullClearIsFree; }
 
+    bool dropsTileOnZeroDivide() const { return fDropsTileOnZeroDivide; }
+
 private:
     /**
      * Maintains a bit per GrPixelConfig. It is used to avoid redundantly
@@ -332,6 +334,7 @@ private:
     bool fFixedFunctionSupport : 1;
     bool fDiscardFBSupport : 1;
     bool fFullClearIsFree : 1;
+    bool fDropsTileOnZeroDivide : 1;
 
     typedef GrDrawTargetCaps INHERITED;
 };