Fix styling of Form-Not-Secure warnings on Android

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

Index: ui/android/java/src/org/chromium/ui/DropdownItemBase.java
diff --git a/ui/android/java/src/org/chromium/ui/DropdownItemBase.java b/ui/android/java/src/org/chromium/ui/DropdownItemBase.java
index 9a0c76589b7728ba8785dad939df1d4903fc747f..d53dbe81a2c97e3344124a3fedfb2b657fdd8dab 100644
--- a/ui/android/java/src/org/chromium/ui/DropdownItemBase.java
+++ b/ui/android/java/src/org/chromium/ui/DropdownItemBase.java
@@ -55,6 +55,11 @@ public class DropdownItemBase implements DropdownItem {
     }
 
     @Override
+    public int getSublabelFontSizeResId() {
+        return R.dimen.dropdown_item_sublabel_font_size;
+    }
+
+    @Override
     public boolean isLabelAndSublabelOnSameLine() {
         return false;
     }
@@ -63,4 +68,14 @@ public class DropdownItemBase implements DropdownItem {
     public boolean isIconAtStart() {
         return false;
     }
+
+    @Override
+    public int getIconSizeResId() {
+        return 0;
+    }
+
+    @Override
+    public int getIconMarginResId() {
+        return R.dimen.dropdown_icon_margin;
+    }
 }