Add support for color input datalist on Android

ui/android/java/res/layout/color_button_row.xml

Index: ui/android/java/res/layout/color_button_row.xml
diff --git a/ui/android/java/res/layout/color_button_row.xml b/ui/android/java/res/layout/color_button_row.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4649c9230e3cdbe7f4825ec364a13d5c3c555012
--- /dev/null
+++ b/ui/android/java/res/layout/color_button_row.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>

[newt (away), 2013/10/09 06:07:03]

I'd prefer if this were replaced with a Java class that extends LinearLayout and
inserts the child Views programmatically. This will let you control the number
of color buttons with a runtime parameter (instead of fixing it to 4)

+<!--
+     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.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        android:orientation="horizontal"

[newt (away), 2013/10/09 06:07:03]

unindent by 4

[keishi, 2013/10/15 16:44:02]

Done.

+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+    <View android:id="@+id/color_button_1"
+        android:background="@drawable/color_button_background"
+        android:layout_weight="1"
+        android:layout_width="wrap_content"

[newt (away), 2013/10/09 06:07:03]

layout_width should be 0dp for all of these color_button views.
layout_weight="1" will then ensure that each view gets 25% of the available
width

[keishi, 2013/10/15 16:44:02]

Done.

+        android:layout_height="@dimen/color_button_height" />
+
+    <View android:id="@+id/color_button_2"
+        android:background="@drawable/color_button_background"
+        android:layout_weight="1"
+        android:layout_width="wrap_content"
+        android:layout_height="@dimen/color_button_height" />
+
+    <View android:id="@+id/color_button_3"
+        android:background="@drawable/color_button_background"
+        android:layout_weight="1"
+        android:layout_width="wrap_content"
+        android:layout_height="@dimen/color_button_height" />
+
+    <View android:id="@+id/color_button_4"
+        android:background="@drawable/last_color_button_background"
+        android:layout_weight="1"
+        android:layout_width="wrap_content"
+        android:layout_height="@dimen/color_button_height" />
+</LinearLayout>