FMRadio does not use cleartext network traffic.

This declares to the platform and tools that this app does not use
cleartext network traffic. The platform and tools will be blocking
(on best effort basis) attempts to use such traffic by this app.
For example, attempts to use HTTP (rather than HTTPS) will be blocked.

Bug: 19215516
Bug: 21123426
Change-Id: Id1452b971e84d86528249b90b07e9574655f20cc
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 1e8c955..fa3e792 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -23,7 +23,8 @@
     <!-- FM uses AudioPatch which is new in sdk 21 -->
     <uses-sdk
         android:minSdkVersion="21"
-        android:targetSdkVersion="21" />
+        android:targetSdkVersion="21"
+        android:usesCleartextTraffic="false" />
 
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />