AppRTCDemo: Render each video in a separate SurfaceView

webrtc/examples/androidapp/res/layout/activity_call.xml

 <?xml version="1.0" encoding="utf-8"?>
 
 <RelativeLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:tools="http://schemas.android.com/tools"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
-    <android.opengl.GLSurfaceView
-        android:id="@+id/glview_call"
+    <org.appspot.apprtc.PercentFrameLayout
+        android:id="@+id/remote_video_layout"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="match_parent">
+      <org.webrtc.SurfaceViewRenderer
+          android:id="@+id/remote_video_view"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content" />
+    </org.appspot.apprtc.PercentFrameLayout>
+
+    <org.appspot.apprtc.PercentFrameLayout
+        android:id="@+id/local_video_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+      <org.webrtc.SurfaceViewRenderer
+          android:id="@+id/local_video_view"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content" />
+    </org.appspot.apprtc.PercentFrameLayout>
 
     <FrameLayout
         android:id="@+id/call_fragment_container"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
     <FrameLayout
         android:id="@+id/hud_fragment_container"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
 </RelativeLayout>