Bug 1102836 - Make close button hit area a bit taller (r=mhaigh)

mobile/android/base/tabs/TabsLayoutItemView.java

@@ -101,19 +101,15 @@ public class TabsLayoutItemView extends LinearLayout
             public boolean onPreDraw() {
                 getViewTreeObserver().removeOnPreDrawListener(this);
 
-                final Rect hitRect = new Rect();
-                mCloseButton.getHitRect(hitRect);
-
                 // Ideally we want the close button hit area to be 40x40dp but we are constrained by the height of the parent, so
                 // we make it as tall as the parent view and 40dp across.
                 final int targetHitArea = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 40, getResources().getDisplayMetrics());;
-                final View parent = ((View) mCloseButton.getParent());
-
 
+                final Rect hitRect = new Rect();
                 hitRect.top = 0;
                 hitRect.right = getWidth();
                 hitRect.left = getWidth() - targetHitArea;
-                hitRect.bottom = parent.getHeight();
+                hitRect.bottom = targetHitArea;
 
                 setTouchDelegate(new TouchDelegate(hitRect, mCloseButton));