Use elevation for dynamic shadows

Bug: 15550085
Change-Id: I21839913551cd7bbbab0b3ab22a708a09e7b6200
diff --git a/src/com/android/calculator2/CalculatorPadViewPager.java b/src/com/android/calculator2/CalculatorPadViewPager.java
index bc015f2..014df9c 100644
--- a/src/com/android/calculator2/CalculatorPadViewPager.java
+++ b/src/com/android/calculator2/CalculatorPadViewPager.java
@@ -48,7 +48,7 @@
 
         @Override
         public float getPageWidth(int position) {
-            return position == 1 ? 0.8f : 1.0f;
+            return position == 1 ? 7.0f / 9.0f : 1.0f;
         }
     };