Update browseable samples for lmp-docs

Synced to commit df5e5013422b81b4fd05c0ac9fd964b13624847a. Includes
new samples for Android Auto.

Change-Id: I3fec46e2a6b3f196682a92f1afd91eb682dc2dc1

samples/browseable/StorageProvider/AndroidManifest.xml

@@ -21,9 +21,7 @@
           android:versionCode="1"
           android:versionName="1.0">
 
-    <uses-sdk
-        android:minSdkVersion="19"
-        android:targetSdkVersion="19"/>
+    <!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
 
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

samples/browseable/StorageProvider/_index.jd

@@ -1,7 +1,10 @@
-page.tags="Storage access framework", storage, documents
+page.tags="MyCloud"
 sample.group=Content
 @jd:body
 
-<p>This sample demonstrates how to use the
-{@link android.provider.DocumentsProvider} API to manage documents and
-expose them to the Android system for sharing.</p>
+<p>
+            
+            \nA simple implementation of a documents provider using the storage access framework in
+            Android 4.4.
+            
+        </p>

samples/browseable/StorageProvider/res/values-v21/template-styles.xml

@@ -0,0 +1,22 @@
+<!--
+  Copyright 2014 The Android Open Source Project
+
+  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.
+  -->
+
+<resources>
+
+    <!-- Activity themes -->
+    <style name="Theme.Base" parent="android:Theme.Material.Light" />
+
+</resources>

samples/browseable/StorageProvider/res/values/base-strings.xml

@@ -14,9 +14,6 @@
  See the License for the specific language governing permissions and
  limitations under the License.
 -->
-
-
-
 <resources>
     <string name="app_name">MyCloud</string>
     <string name="intro_message">

samples/browseable/StorageProvider/res/values/strings.xml

@@ -14,9 +14,6 @@
  See the License for the specific language governing permissions and
  limitations under the License.
 -->
-
-
-
 <resources>
         <string name="sample_action">Log in</string>
 </resources>

samples/browseable/StorageProvider/src/com.example.android.storageprovider/MainActivity.java

@@ -14,9 +14,6 @@
 * limitations under the License.
 */
 
-
-
-
 package com.example.android.storageprovider;
 
 import android.graphics.Color;