Adding accessor methods for camera latency vars.

-keep class com.android.camera.CameraActivity {

  public boolean isRecording();

  public long getAutoFocusTime();

  public long getShutterLag();

  public long getShutterToPictureDisplayedTime();

  public long getPictureDisplayedToJpegCallbackTime();

  public long getJpegCallbackFinishTime();

  public long getCaptureStartTime();

}

-keep class com.android.camera.VideoModule {