Revert of Use dropdown list for admin areas in pr form.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java
index 7ee1d0f24ff052cb9d71f696a702f662b3e36642..ea457b1905c2e8a6065fc5987c95168025b8bc78 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/EditorDropdownField.java
@@ -18,14 +18,11 @@
 import android.widget.TextView;
 
 import org.chromium.chrome.R;
-import org.chromium.chrome.browser.payments.ui.PaymentRequestUI.PaymentRequestObserverForTest;
 import org.chromium.chrome.browser.preferences.autofill.AutofillProfileBridge.DropdownKeyValue;
 import org.chromium.ui.UiUtils;
 
 import java.util.ArrayList;
 import java.util.List;
-
-import javax.annotation.Nullable;
 
 /**
  * Helper class for creating a dropdown view with a label.
@@ -36,8 +33,6 @@
     private final TextView mLabel;
     private final Spinner mDropdown;
     private int mSelectedIndex;
-    @Nullable
-    private PaymentRequestObserverForTest mObserverForTest;
 
     /**
      * Builds a dropdown view.
@@ -49,10 +44,9 @@
      *                        processed.
      */
     public EditorDropdownField(Context context, ViewGroup root, final EditorFieldModel fieldModel,
-            final Runnable changedCallback, @Nullable PaymentRequestObserverForTest observer) {
+            final Runnable changedCallback) {
         assert fieldModel.getInputTypeHint() == EditorFieldModel.INPUT_TYPE_HINT_DROPDOWN;
         mFieldModel = fieldModel;
-        mObserverForTest = observer;
 
         mLayout = LayoutInflater.from(context).inflate(
                 R.layout.payment_request_editor_dropdown, root, false);
@@ -102,9 +96,6 @@
                     mFieldModel.setDropdownKey(
                             mFieldModel.getDropdownKeyValues().get(position).getKey(),
                             changedCallback);
-                }
-                if (mObserverForTest != null) {
-                    mObserverForTest.onPaymentRequestEditorTextUpdate();
                 }
             }