Add third_party/android_data_chart for data chart widget.

third_party/android_snippets/java/res/values/attrs.xml

Index: third_party/android_snippets/java/res/values/attrs.xml
diff --git a/third_party/android_snippets/java/res/values/attrs.xml b/third_party/android_snippets/java/res/values/attrs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..061163c7c933f8339d7b4d06517438ed3b9e142e
--- /dev/null
+++ b/third_party/android_snippets/java/res/values/attrs.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2015 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. -->
+
+<resources>
+    <declare-styleable name="ChartView">
+        <!-- optimal width of the chart -->
+        <attr name="optimalWidth" format="dimension" />
+        <!-- how to weight extra space beyond optimal width -->
+        <attr name="optimalWidthWeight" format="float" />
+    </declare-styleable>
+
+    <declare-styleable name="ChartGridView">
+        <attr name="primaryDrawable" format="reference" />
+        <attr name="secondaryDrawable" format="reference" />
+        <attr name="borderDrawable" format="reference" />
+    </declare-styleable>
+
+    <declare-styleable name="ChartNetworkSeriesView">
+        <attr name="strokeColor" format="color" />
+        <attr name="fillColor" format="color" />
+        <attr name="fillColorSecondary" format="color" />
+    </declare-styleable>
+</resources>