Use dropdown list for admin areas in pr form.

chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java
index 75f294b70c1a0410b4206c77aee796eca252a7c9..0e0e26880adda92caa4dc84e5058b7081e1d9d2f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorView.java
@@ -344,7 +344,7 @@ public class EditorView extends AlwaysDismissedDialog implements OnClickListener
                 if (nextFieldModel.isFullLine()) useFullLine = true;
             }
 
-            if (useFullLine) {
+            if (useFullLine || isLastField) {
                 addFieldViewToEditor(mDataView, fieldModel);
             } else {
                 // Create a LinearLayout to put it and the next view side by side.
@@ -401,8 +401,8 @@ public class EditorView extends AlwaysDismissedDialog implements OnClickListener
                     if (mObserverForTest != null) mObserverForTest.onPaymentRequestReadyToEdit();
                 }
             };
-            EditorDropdownField dropdownView =
-                    new EditorDropdownField(mContext, parent, fieldModel, prepareEditorRunnable);
+            EditorDropdownField dropdownView = new EditorDropdownField(
+                    mContext, parent, fieldModel, prepareEditorRunnable, mObserverForTest);
             mFieldViews.add(dropdownView);
             mDropdownFields.add(dropdownView.getDropdown());