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.RectF;
+import android.graphics.drawable.Drawable;
+
+public class AutofillDividerDrawable extends Drawable {
+
+    private Paint paint;

[newt (away), 2013/09/09 20:20:42]

mPaint

[keishi, 2013/09/19 11:53:05]

Done.

+
+    public AutofillDividerDrawable() {
+        paint = new Paint();
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        int width = getBounds().width();
+        RectF rect = new RectF(0, 0, width, 1);

[newt (away), 2013/09/09 20:20:42]

avoid allocating memory while drawing: store this rect as a member variable and
update its dimensions when drawing (or in onBoundsChange()).

Also, the height should be a constant dp (not px). You'll need to multiply by
density (getContext().getResources().density) to get dp from px. I think you'll
need to pass in density to the constructor of this class, since the context
isn't available here.

[keishi, 2013/09/19 11:53:05]

Done.

+        canvas.drawRect(rect, paint);
+    }
+
+    public void setColor(int color) {
+        paint.setColor(color);
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+    }
+
+    @Override
+    public void setColorFilter(ColorFilter cf) {
+    }
+
+    @Override
+    public int getOpacity() {
+        return 255;
+    }
+
+}