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

third_party/WebKit/LayoutTests/fast/dom/Geolocation/script-tests/disconnected-frame.js

 description("Tests that when a request is made on a Geolocation object and its Frame is disconnected before a callback is made, no callbacks are made.");
 
-if (!window.testRunner || !window.internals)
-    debug('This test can not run without testRunner or internals');
+if (!window.testRunner || !window.mojo)
+    debug('This test can not run without testRunner or mojo');
 
-internals.setGeolocationClientMock(document);
-internals.setGeolocationPermission(document, true);
-internals.setGeolocationPosition(document, 51.478, -0.166, 100);
+var error;
+var iframe = document.createElement('iframe');
 
 function onIframeLoaded() {
     iframeGeolocation = iframe.contentWindow.navigator.geolocation;
     iframe.src = 'data:text/html,This frame should be visible when the test completes';
 }
 
-var error;
 function onIframeUnloaded() {
     iframeGeolocation.getCurrentPosition(function () {
         testFailed('Success callback invoked unexpectedly');
         finishJSTest();
     }, function(e) {
         testFailed('Error callback invoked unexpectedly');
         finishJSTest();
     });
     setTimeout(function() {
         testPassed('No callbacks invoked');
         finishJSTest();
     }, 100);
 }
 
-var iframe = document.createElement('iframe');
-iframe.src = 'resources/disconnected-frame-inner.html';
-document.body.appendChild(iframe);
+geolocationServiceMock.then(mock => {
+    mock.setGeolocationPermission(true);
+    mock.setGeolocationPosition(51.478, -0.166, 100);
+
+    iframe.src = 'resources/disconnected-frame-inner.html';
+    document.body.appendChild(iframe);
+});
 
 window.jsTestIsAsync = true;