More on weights in GridLayout

Chance as little as possible from existing. If weights are defined only a
subset of the views in a layout (the normal case) leave the layout of the
remaining views unaffected.

Change-Id: I27473e303c0666930e2fb515b794df96a8b97272

core/java/android/widget/GridLayout.java

@@ -1322,7 +1322,7 @@ public class GridLayout extends ViewGroup {
                 // we must include views that are GONE here, see introductory javadoc
                 LayoutParams lp = getLayoutParams(c);
                 Spec spec = horizontal ? lp.columnSpec : lp.rowSpec;
-                int size = !hasWeights() ?
+                int size = (spec.weight == 0) ?
                         getMeasurementIncludingMargin(c, horizontal) :
                         getOriginalMeasurements()[i] + getDeltas()[i];
                 groupBounds.getValue(i).include(GridLayout.this, c, spec, this, size);