Show icons in Android web autofill dropdown

ui/android/java/src/org/chromium/ui/DropdownItem.java

Index: ui/android/java/src/org/chromium/ui/DropdownItem.java
diff --git a/ui/android/java/src/org/chromium/ui/DropdownItem.java b/ui/android/java/src/org/chromium/ui/DropdownItem.java
index 46d8d0e215318974131233e888892e772f7f0492..4b89a4984311567bfe6e5b2dd90c68a1f3ecab45 100644
--- a/ui/android/java/src/org/chromium/ui/DropdownItem.java
+++ b/ui/android/java/src/org/chromium/ui/DropdownItem.java
@@ -8,6 +8,9 @@ package org.chromium.ui;
  * Dropdown item interface used to access all the information needed to show the item.
  */
 public interface DropdownItem {
+    // A stand in for a resource ID which indicates no icon should be shown.
+    public static final int NO_ICON = 0;
+
     /**
      * Returns the label that should be shown in the dropdown.
      */
@@ -17,6 +20,10 @@ public interface DropdownItem {
      */
     String getSublabel();
     /**
+     * Returns the drawable id of the icon that should be shown in the dropdown, or NO_ICON.
+     */
+    int getIconId();
+    /**
      * Returns true if the item should be enabled in the dropdown.
      */
     boolean isEnabled();