Add billing address to credit cards.

chrome/android/java/res/layout/autofill_credit_card_editor.xml

Index: chrome/android/java/res/layout/autofill_credit_card_editor.xml
diff --git a/chrome/android/java/res/layout/autofill_credit_card_editor.xml b/chrome/android/java/res/layout/autofill_credit_card_editor.xml
index 4a57db0a7990258cba8ea2cc4b0a63e5fc4d09ac..7fef65a62db1565506030fc4ca2587dd98cf2bc8 100644
--- a/chrome/android/java/res/layout/autofill_credit_card_editor.xml
+++ b/chrome/android/java/res/layout/autofill_credit_card_editor.xml
@@ -97,6 +97,22 @@
                       <View style="@style/PreferenceSpinnerUnderlineView"  />
                 </LinearLayout>
             </LinearLayout>
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:focusable="true"
+                android:paddingTop="@dimen/pref_autofill_field_top_padding"

[gone, 2016/06/23 15:56:27]

Any reason why there isn't a bottom padding here?

[please use gerrit instead, 2016/06/23 16:00:44]

Copy-pasta from above, that's all.

+                android:textAppearance="@style/PreferenceFloatLabelTextAppearance"
+                android:text="@string/autofill_credit_card_editor_billing_address"
+                android:paddingStart="@dimen/pref_autofill_field_horizontal_padding"
+                android:paddingEnd="@dimen/pref_autofill_field_horizontal_padding" />
+
+            <Spinner
+                android:id="@+id/autofill_credit_card_editor_billing_address_spinner"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+            <View style="@style/PreferenceSpinnerUnderlineView"  />
         </LinearLayout>
 
         <Space style="@style/ButtonBarTopSpacer" />