Convert most geolocation layout tests to use a JS mock implementation.

third_party/WebKit/LayoutTests/fast/dom/Geolocation/script-tests/clear-watch-invalid-id-crash.js

 description("Tests for a crash when clearWatch() is called with a zero ID.<br><br>We call clearWatch() with a request in progress then navigate the page. This accesses the watchers map during cleanup and triggers the crash. This page should not be visible when the test completes.");
 
-if (!window.testRunner || !window.internals)
-    debug('This test can not run without testRunner or internals');
-
-internals.setGeolocationClientMock(document);
-internals.setGeolocationPermission(document, true);
-internals.setGeolocationPosition(document, 51.478, -0.166, 100);
+if (!window.testRunner || !window.mojo)
+    debug('This test can not run without testRunner or mojo');
 
 document.body.onload = function() {
-    navigator.geolocation.watchPosition(function() {});
-    navigator.geolocation.clearWatch(0);
-    location = "data:text/html,TEST COMPLETE<script>if(window.testRunner) testRunner.notifyDone();</script>";
+    geolocationServiceMock.then(mock => {
+        mock.setGeolocationPermission(true);
+        mock.setGeolocationPosition(51.478, -0.166, 100);
+
+        navigator.geolocation.watchPosition(function() {});
+        navigator.geolocation.clearWatch(0);
+        location = "data:text/html,TEST COMPLETE<script>if(window.testRunner) testRunner.notifyDone();</script>";
+    });
 }
 
 window.jsTestIsAsync = true;