title: Google Play Services v23 Proguard configuration
body: <p>After upgrading to Google Play services v23, I see this message when trying to export signed application in Eclipse:</p>
  
  <pre><code>Proguard returned with error code 1. See console
  Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class android.content.pm.PackageInstaller
  Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class android.content.pm.PackageInstaller$SessionInfo
  Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class android.content.pm.PackageInstaller
  Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced class android.content.pm.PackageInstaller$SessionInfo
  Warning: com.google.android.gms.common.GooglePlayServicesUtil: can't find referenced method 'android.content.pm.PackageInstaller getPackageInstaller()' in class android.content.pm.PackageManager
  Warning: com.google.android.gms.internal.zzif: can't find referenced method 'void setMixedContentMode(int)' in class android.webkit.WebSettings
        You should check if you need to specify additional program jars.
  Warning: there were 4 unresolved references to classes or interfaces.
           You may need to specify additional library jars (using '-libraryjars').
  Warning: there were 2 unresolved references to program class members.
           Your input classes appear to be inconsistent.
           You may need to recompile them and try again.
           Alternatively, you may have to specify the option 
           '-dontskipnonpubliclibraryclassmembers'.
  java.io.IOException: Please correct the above warnings first.
      at proguard.Initializer.execute(Initializer.java:321)
      at proguard.ProGuard.initialize(ProGuard.java:211)
      at proguard.ProGuard.execute(ProGuard.java:86)
      at proguard.ProGuard.main(ProGuard.java:492)
  </code></pre>
  
  <p>I added this, as specified in <a href="http://developer.android.com/google/play-services/setup.html#Proguard" rel="noreferrer" title="This">documentation</a></p>
  
  <pre><code>-keep class * extends java.util.ListResourceBundle {
      protected Object[][] getContents();
  }
  
  -keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable {
      public static final *** NULL;
  }
  
  -keepnames @com.google.android.gms.common.annotation.KeepName class *
  -keepclassmembernames class * {
      @com.google.android.gms.common.annotation.KeepName *;
  }
  
  -keepnames class * implements android.os.Parcelable {
      public static final ** CREATOR;
  }
  </code></pre>
  
  <p>and tried adding </p>
  
  <pre><code>-keep class android.content.pm.PackageInstaller.**
  </code></pre>
  
  <p>to <code>proguard-project.txt</code>, but this didnt help.</p>
  
  <p>What am I missing?</p>