Portals: Override LocationUtils in android portals tests

Some permissions tests rely on a prompt being shown when requesting
location access, but location access is automatically denied when
geolocation is turned off in system settings. This causes flakes on
certain bots that don't have geolocation enabled.

Bug: 1094586
Change-Id: I08a6b5add43a90ea40ad99ec5272373ceaf03ad7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2246925Reviewed-by: David Trainor <dtrainor@chromium.org>
Commit-Queue: Adithya Srinivasan <adithyas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#779352}

chrome/android/javatests/src/org/chromium/chrome/browser/portals/PortalsTest.java

@@ -49,6 +49,7 @@ import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.test.ChromeActivityTestRule;
 import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
 import org.chromium.chrome.test.util.browser.webapps.WebappTestPage;
+import org.chromium.components.location.LocationUtils;
 import org.chromium.components.permissions.PermissionDialogController;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.browser.test.util.Coordinates;
@@ -80,11 +81,20 @@ public class PortalsTest {
     @Before
     public void setUp() {
         mTestServer = EmbeddedTestServer.createAndStartServer(InstrumentationRegistry.getContext());
+        // Some devices have geolocation disabled, so override LocationUtils to always show
+        // geolocation as enabled to prevent flakes in the permissions tests.
+        LocationUtils.setFactory(() -> new LocationUtils() {
+            @Override
+            public boolean isSystemLocationSettingEnabled() {
+                return true;
+            }
+        });
     }
 
     @After
     public void tearDown() {
         mTestServer.stopAndDestroyServer();
+        LocationUtils.setFactory(null);
     }
 
     private class TabContentsSwapObserver extends EmptyTabObserver {