Fix for ovals failing on Xoom.

src/gpu/GrOvalRenderer.cpp

Index: src/gpu/GrOvalRenderer.cpp
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index 667efc4a083a5651a2374cdf877673f7747ddf4b..946cdc06ae0ba518b8259c083fe9d32ee839fc2a 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -691,7 +691,8 @@ bool GrOvalRenderer::drawEllipse(GrDrawTarget* target,
                                                     innerXRadius > 0 && innerYRadius > 0);
 
     static const int kEllipseCenterAttrIndex = 1;
-    drawState->addCoverageEffect(effect, kEllipseCenterAttrIndex)->unref();
+    static const int kEllipseEdgeAttrIndex = 2;
+    drawState->addCoverageEffect(effect, kEllipseCenterAttrIndex, kEllipseEdgeAttrIndex)->unref();
 
     // Compute the reciprocals of the radii here to save time in the shader
     SkScalar xRadRecip = SkScalarInvert(xRadius);