Expanded Autofill Credit Card Popup Layout Experiment in Android.

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

Index: ui/android/java/src/org/chromium/ui/DropdownDividerDrawable.java
diff --git a/ui/android/java/src/org/chromium/ui/DropdownDividerDrawable.java b/ui/android/java/src/org/chromium/ui/DropdownDividerDrawable.java
index 014192a55761ddf6912c2fca3641c807671bbfde..1b45064f710b9e167531c965b564f8692edec3f5 100644
--- a/ui/android/java/src/org/chromium/ui/DropdownDividerDrawable.java
+++ b/ui/android/java/src/org/chromium/ui/DropdownDividerDrawable.java
@@ -13,16 +13,24 @@ import android.graphics.drawable.Drawable;
 
 class DropdownDividerDrawable extends Drawable {
 
-    private Paint mPaint;
-    private Rect mDividerRect;
-
-    public DropdownDividerDrawable() {
+    private final Paint mPaint;
+    private final Rect mDividerRect;
+    private final Integer mBackgroundColor;
+
+    /**
+     * Creates a drawable to draw a divider line that separates the list of {@link DropdownItem}
+     * and, optionally, paints the rectangular canvas.
+     * @param backgroundColor Popup background color. If {@code null}, does not paint the canvas.
+     */
+    public DropdownDividerDrawable(Integer backgroundColor) {
         mPaint = new Paint();
         mDividerRect = new Rect();
+        mBackgroundColor = backgroundColor;
     }
 
     @Override
     public void draw(Canvas canvas) {
+        if (mBackgroundColor != null) canvas.drawColor(mBackgroundColor);
         canvas.drawRect(mDividerRect, mPaint);
     }
 
@@ -35,7 +43,7 @@ class DropdownDividerDrawable extends Drawable {
         mDividerRect.set(0, 0, mDividerRect.right, height);
     }
 
-    public void setColor(int color) {
+    public void setDividerColor(int color) {
         mPaint.setColor(color);
     }