Merge \"Trapping backspace at EditText level to prevent popping Docs.\" into nyc-mr1-dev

import android.content.Context;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextUtils;

import android.text.TextWatcher;

import android.view.KeyEvent;

import android.view.LayoutInflater;

                            return false;

                        }

                        // Returning false in this method will bubble the event up to

                        // {@link BaseActivity#onKeyDown}. In order to prevent backspace popping

                        // documents once the textView is empty, we are going to trap it here.

                        if (keyCode == KeyEvent.KEYCODE_DEL

                                && TextUtils.isEmpty(mDisplayName.getText())) {

                            return true;

                        }

                        if (keyCode == KeyEvent.KEYCODE_ENTER && mSave.isEnabled()) {

                            performSave();

                            return true;