Update Android card unmasking prompt for the expiration date case.

ui/android/java/res/layout/autofill_card_unmask_prompt.xml

Index: ui/android/java/res/layout/autofill_card_unmask_prompt.xml
diff --git a/ui/android/java/res/layout/autofill_card_unmask_prompt.xml b/ui/android/java/res/layout/autofill_card_unmask_prompt.xml
index f6487453ac592d94df8f8f7aa7a1d34cb7a49974..c5076eeba71fcaf20d6e357679abceb173e85e2b 100644
--- a/ui/android/java/res/layout/autofill_card_unmask_prompt.xml
+++ b/ui/android/java/res/layout/autofill_card_unmask_prompt.xml
@@ -14,11 +14,11 @@
         android:id="@+id/instructions"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:textSize="20sp"
-        android:paddingStart="5dp"
-        android:paddingEnd="5dp"
-        android:paddingBottom="5dp"
-        android:paddingTop="5dp"
+        android:textSize="16sp"
+        android:layout_marginStart="24dp"
+        android:layout_marginEnd="10dp"
+        android:layout_marginBottom="8dp"
+        android:layout_marginTop="10dp"
         android:gravity="start" />
 
     <LinearLayout
@@ -26,6 +26,21 @@
         android:layout_height="wrap_content"
         android:orientation="horizontal">
 
+        <!-- TODO(estade): add accessibility content descriptions. -->
+        <Spinner
+            android:id="@+id/expiration_month"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"

[newt (away), 2015/01/29 04:42:27]

Height should be wrap_content. Same below.

[Evan Stade, 2015/01/30 02:13:23]

Done.

+            android:layout_marginStart="16dp"
+            android:visibility="gone" />
+
+        <Spinner
+            android:id="@+id/expiration_year"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_marginStart="16dp"
+            android:visibility="gone" />
+
         <EditText
             android:id="@+id/card_unmask_input"
             android:inputType="number"