Merge "Check if slice provider was initialized" into main

    @Override

    public boolean onCreateSliceProvider() {

        mContextAvailableCallback.onContextAvailable(getContext());

        if (mMediaManager == null) {

            Log.e(TAG, "Dagger injection failed, cannot start. See any above warnings with string: "

                    + "\"No injector for class\"");

            return false;

        }

        mMediaWakeLock = new SettableWakeLock(

                WakeLock.createPartial(getContext(), mWakeLockLogger, "media"), "media");

        synchronized (KeyguardSliceProvider.sInstanceLock) {