Add a "Shared with me" section.

MyTracks/res/layout/track_list_header.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Copyright 2013 Google Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+  android:id="@+id/track_list_header"
+  android:layout_height="wrap_content"
+  android:layout_width="fill_parent"
+  android:paddingBottom="2dp"
+  android:paddingLeft="5dp"
+  android:paddingTop="2dp"
+  android:text="@string/track_list_shared_with_me"
+  style="?android:attr/listSeparatorTextViewStyle" />

MyTracks/res/values/strings.xml

@@ -2424,7 +2424,12 @@ limitations under the License.
       success.">
     Now recording a new track.
   </string>
-
+  <string name="track_list_shared_with_me"
+    translation_description="The section header for &#8216;Shared with me&#8217; tracks from Google
+      Drive.">
+    Shared with me
+  </string>
+  
   <!-- Track Widget -->
   <string name="track_widget_config_title"
     translation_description="Title of the page to configure the My Tracks widget items.">