Update browseable samples for lmp-docs

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

Change-Id: I3fec46e2a6b3f196682a92f1afd91eb682dc2dc1

samples/browseable/BluetoothLeGatt/AndroidManifest.xml

@@ -22,8 +22,8 @@
     android:versionCode="1"
     android:versionName="1.0">
 
-    <uses-sdk android:minSdkVersion="18"
-        android:targetSdkVersion="18"/>
+    <!-- Min/target SDK versions (<uses-sdk>) managed by build.gradle -->
+    
     <!-- Declare this required feature if you want to make the app available to BLE-capable
     devices only.  If you want to make your app available to devices that don't support BLE,
     you should omit this in the manifest.  Instead, determine BLE capability by using

samples/browseable/BluetoothLeGatt/_index.jd

@@ -1,12 +1,10 @@
-
-
-
 page.tags="BluetoothLeGatt"
 sample.group=Connectivity
 @jd:body
 
-<p>This sample demonstrates how to use the Bluetooth Low Energy Generic
-Attribute Profile (GATT) to transmit arbitrary data between devices. For more
-information about using Android's suppport for Bluetooth Low Energy, see
-<a href="{@docRoot}guide/topics/connectivity/bluetooth-le.html">Bluetooth Low
-Energy</a>.</p>
+<p>
+            
+            This sample demonstrates how to use the Bluetooth LE Generic Attribute Profile (GATT)
+            to transmit arbitrary data between devices.
+            
+        </p>

samples/browseable/BluetoothLeGatt/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/BluetoothLeGatt/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">BluetoothLeGatt</string>
     <string name="intro_message">