Refactor contact editor controller into its own class.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java
index ae91771e009d189bead8613feb266fa8828ff17d..7e15a3aa3a0c7679777eff70241a2317ab5be038 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/payments/ui/PaymentRequestUI.java
@@ -582,13 +582,9 @@ public class PaymentRequestUI implements DialogInterface.OnDismissListener, View
         }
     }
 
-    /**
-     * Displays the editor user interface for the given model.
-     *
-     * @param editorModel The description of the editor user interface to display.
-     */
-    public void showEditor(final EditorModel editorModel) {
-        mEditorView.show(editorModel);
+    /** @return The editor user interface. */
+    public EditorView getEditorView() {
+        return mEditorView;
     }
 
     /**
@@ -1016,11 +1012,6 @@ public class PaymentRequestUI implements DialogInterface.OnDismissListener, View
     }
 
     @VisibleForTesting
-    public Dialog getEditorViewForTest() {
-        return mEditorView;
-    }
-
-    @VisibleForTesting
     public ViewGroup getShippingAddressSectionForTest() {
         return mShippingAddressSection;
     }