Use dropdown list for admin areas in pr form.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorFieldModel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorFieldModel.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorFieldModel.java
index 690834bd36fb17c5d3aff9b76a5d184ffaadda66..08037a67ce51937cb072438d1bf48ce1ccc5779d 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorFieldModel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorFieldModel.java
@@ -198,6 +198,11 @@ public class EditorFieldModel {
         return result;
     }
 
+    /** Constructs a dropdown field model. */
+    public static EditorFieldModel createDropdown() {
+        return new EditorFieldModel(INPUT_TYPE_HINT_DROPDOWN);
+    }
+
     /**
      * Constructs a dropdown field model.
      *
@@ -332,11 +337,17 @@ public class EditorFieldModel {
         return mValueIconGenerator;
     }
 
-    private boolean isTextField() {
+    /** @return Whether the input is a text field. */
+    public boolean isTextField() {
         return mInputTypeHint >= INPUT_TYPE_HINT_MIN_INCLUSIVE
                 && mInputTypeHint < INPUT_TYPE_HINT_MAX_TEXT_INPUT_EXCLUSIVE;
     }
 
+    /** @return Whether the input is a dropdown field. */
+    public boolean isDropdownField() {
+        return mInputTypeHint == INPUT_TYPE_HINT_DROPDOWN;
+    }
+
     /** @return The type of input, for example, INPUT_TYPE_HINT_PHONE. */
     public int getInputTypeHint() {
         return mInputTypeHint;