Revert "Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase"

This reverts commit 29d0958a.

Issue #2822382 by voleger, pfrenssen, erozqba, RytoEX, borisson_, sidharthap, Jo Fitzgerald, shashikant_chauhan: Make every  property protected on classes extending BrowserTestBase and KernelTestBase

(cherry picked from commit 69501f30)

Issue #2747167 by michielnugter, dawehner, Lendude, mglaman, Mac_Weber, Jo Fitzgerald, klausi: Convert first part of web tests of views_ui

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2635224 by dawehner, bojanz: ContentEntityBase should provide field definitions for key fields

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2168893 by marthinal, euphoric_mv, lauriii, Elijah Lynn, nod_, blueminds, jhedstrom, joelpittet, dawehner, tim.plunkett, YesCT: Views filters groups adding and removing is broken

Issue #2469563 by marthinal, lauriii, dawehner, Fabianx, xjm, pjonckiere: Double-escape on Views filters