Add support for color input datalist on Android

ui/android/java/src/org/chromium/ui/ColorGridAdapter.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;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.GridView;
+
+import java.util.ArrayList;
+
+public class ColorGridAdapter extends ArrayAdapter<ColorSuggestion> {
+    private Context mContext;
+
+    ColorGridAdapter(Context context, ArrayList<ColorSuggestion> suggestions) {
+        super(context, R.layout.color_button, suggestions);
+        mContext = context;
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+        View layout = convertView;
+        if (convertView == null) {
+            LayoutInflater inflater =
+                    (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+            layout = inflater.inflate(R.layout.color_button, null);
+        }
+        View swatch = layout.findViewById(R.id.color_button_swatch);
+        ColorSuggestion suggestion = getItem(position);
+        swatch.setBackgroundColor(suggestion.mValueAsColor);
+        String description = suggestion.mLabel;
+        if (description.isEmpty())
+            description = suggestion.mValueAsText;
+        layout.setContentDescription(description);
+        return layout;
+    }
+}