Support for video file instead of camera and output video out to file

webrtc/examples/androidapp/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.appspot.apprtc"
           android:versionCode="1"
           android:versionName="1.0">
 
     <uses-feature android:name="android.hardware.camera" />
     <uses-feature android:name="android.hardware.camera.autofocus" />
     <uses-feature android:glEsVersion="0x00020000" android:required="true" />
     <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="21" />
@@ skipping 29 matching lines @@
 
         <activity android:name="SettingsActivity"
                   android:label="@string/settings_name">
         </activity>
 
         <activity android:name="CallActivity"
                   android:label="@string/app_name"
                   android:screenOrientation="fullUser"
                   android:configChanges="orientation|screenSize"
                   android:theme="@style/CallActivityTheme">
+                  <intent-filter>

[sakal, 2016/09/27 07:54:28]

There is already an intent in the ConnectActivity. Can we keep using that one or
move all code to this intent?

+                      <action android:name="android.intent.action.VIEW" />
+                      <category android:name="android.intent.category.LAUNCHER" />
+                  </intent-filter>
         </activity>
     </application>
 </manifest>