title: UnsatisfiedLinkError when using GvrLayout
body: <p>I'm developing a Google VR app with the NDK and my activity includes the following code:</p>
  
  <pre><code>if (gvrLayout.setAsyncReprojectionEnabled(true)) {
    AndroidCompat.setSustainedPerformanceMode(this, true);
  }
  </code></pre>
  
  <p>This compiles, but when I try to run the app, I get the following error:</p>
  
  <pre><code>java.lang.UnsatisfiedLinkError: No implementation found for 
    boolean com.google.vr.ndk.base.GvrApi.nativeUsingVrDisplayService(long) 
      (tried Java_com_google_vr_ndk_base_GvrApi_nativeUsingVrDisplayService 
       and Java_com_google_vr_ndk_base_GvrApi_nativeUsingVrDisplayService__J)                                                                                
    at com.google.vr.ndk.base.GvrApi.nativeUsingVrDisplayService(Native Method)
    at com.google.vr.ndk.base.GvrApi.usingVrDisplayService(SourceFile:952)
    at com.google.vr.ndk.base.GvrLayout.setAsyncReprojectionEnabled(SourceFile:610)
  </code></pre>
  
  <p>When I remove that section of code, the app runs without a problem. I'm including sdk-common-1.10.0.aar in my build. Do I need something else?</p>