Add support for datalist to text input element on Android

ui/android/java/src/org/chromium/ui/autofill/AutofillDividerDrawable.java

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.ui.autofill;
+
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.Drawable;
+import android.graphics.PixelFormat;
+
+public class AutofillDividerDrawable extends Drawable {
+
+    private Paint mPaint;
+    private Rect mDividerRect;
+
+    public AutofillDividerDrawable() {
+        mPaint = new Paint();
+        mDividerRect = new Rect();
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        canvas.drawRect(mDividerRect, mPaint);
+    }
+
+    @Override
+    public void onBoundsChange(Rect bounds) {
+        mDividerRect.set(0, 0, bounds.width(), mDividerRect.height());
+    }
+
+    public void setHeight(int height) {
+        mDividerRect.set(0, 0, mDividerRect.right, height);
+    }
+
+    public void setColor(int color) {
+        mPaint.setColor(color);
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+    }
+
+    @Override
+    public void setColorFilter(ColorFilter cf) {
+    }
+
+    @Override
+    public int getOpacity() {
+        return PixelFormat.OPAQUE;
+    }
+}