Class com.google.common.util.concurrent.AbstractFuture

The superclass changed from com.google.common.util.concurrent.internal.InternalFutureFailureAccess to com.google.common.util.concurrent.AbstractFutureState.
Removed interface com.google.common.util.concurrent.ListenableFuture.

Changed Methods
String pendingToString()	Change in return type from java.lang.String to String.	Provide a human-readable explanation of why this future has not yet completed.
Throwable tryInternalFastPathGetFailure()	Change in return type from java.lang.Throwable to Throwable.	Usually returns {@code null} but, if this {@code Future} has failed, may optionally return the cause of the failure.