Remove DevTools locations pane test

The test now lives in the DevTools repository, here:

    devtools/devtools-frontend/src/test/webtests/http/tests/devtools/a11y-axe-core/settings/locations-a11y-test.js

Change-Id: I1d9cbc870cf1df97866b495cef3d0ee478f4b6ad
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2120576
Auto-Submit: Mathias Bynens <mathias@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#753215}

third_party/blink/web_tests/http/tests/devtools/a11y-axe-core/settings/locations-a11y-test-expected.txt

-Tests accessibility in the settings tool locations pane using the axe-core linter.
-
-Running: testAddLocation
-Opened input box: true
-aXe violations: []
-
-
-Running: testNewLocationError
-Invalidating the Location name input
-Error message: Location name cannot be empty
-Invalidating the Latitude input
-Error message: Latitude must be a number
-Invalidating the Longitude input
-Error message: Longitude must be a number
-aXe violations: []
-
-

third_party/blink/web_tests/http/tests/devtools/a11y-axe-core/settings/locations-a11y-test.js

-// Copyright 2019 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-(async function() {
-  TestRunner.addResult(
-      'Tests accessibility in the settings tool locations pane using the axe-core linter.');
-
-  await TestRunner.loadModule('axe_core_test_runner');
-  await UI.viewManager.showView('emulation-locations');
-  const locationsWidget = await UI.viewManager.view('emulation-locations').widget();
-
-  async function testAddLocation() {
-    const addLocationButton = locationsWidget._defaultFocusedElement;
-    addLocationButton.click();
-
-    const newLocationInputs = locationsWidget._list._editor._controls;
-    TestRunner.addResult(`Opened input box: ${!!newLocationInputs}`);
-
-    await AxeCoreTestRunner.runValidation(locationsWidget.contentElement);
-  }
-
-  async function testNewLocationError() {
-    const locationsEditor = locationsWidget._list._editor;
-    const newLocationInputs = locationsEditor._controls;
-    const nameInput = newLocationInputs[0];
-    const latitudeInput = newLocationInputs[1];
-    const longitudeInput = newLocationInputs[2];
-    let errorMessage;
-
-    TestRunner.addResult(`Invalidating the ${nameInput.getAttribute('aria-label')} input`);
-    nameInput.blur();
-    errorMessage = locationsEditor._errorMessageContainer.textContent;
-    TestRunner.addResult(`Error message: ${errorMessage}`);
-
-    TestRunner.addResult(`Invalidating the ${latitudeInput.getAttribute('aria-label')} input`);
-    nameInput.value = 'location';
-    latitudeInput.value = 'a.a';
-    latitudeInput.dispatchEvent(new Event('input'));
-    errorMessage = locationsEditor._errorMessageContainer.textContent;
-    TestRunner.addResult(`Error message: ${errorMessage}`);
-
-    TestRunner.addResult(`Invalidating the ${longitudeInput.getAttribute('aria-label')} input`);
-    latitudeInput.value = '1.1';
-    longitudeInput.value = '1a.1';
-    longitudeInput.dispatchEvent(new Event('input'));
-    errorMessage = locationsEditor._errorMessageContainer.textContent;
-    TestRunner.addResult(`Error message: ${errorMessage}`);
-
-    await AxeCoreTestRunner.runValidation(locationsWidget.contentElement);
-  }
-
-  TestRunner.runAsyncTestSuite([testAddLocation, testNewLocationError]);
-})();