Clank: use PrefService instead of PrefServiceBridge in night_mode

Bug: 1071603
Change-Id: I9ed238460f583a2d1bfb46c1092ddce8da839412
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2290994
Commit-Queue: Evan Stade <estade@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#787017}

chrome/android/java/src/org/chromium/chrome/browser/night_mode/WebContentsDarkModeController.java

@@ -12,8 +12,9 @@ import org.chromium.base.ApplicationState;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.ApplicationStatus.ApplicationStateListener;
 import org.chromium.chrome.browser.preferences.Pref;
-import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.chrome.browser.preferences.SharedPreferencesManager;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.components.user_prefs.UserPrefs;
 
 /**
  * A controller class could enable or disable web content dark mode feature based on the night mode
@@ -52,7 +53,8 @@ public class WebContentsDarkModeController implements ApplicationStateListener {
      * @param enabled the new state of the web content dark mode
      */
     private static void enableWebContentsDarkMode(boolean enabled) {
-        PrefServiceBridge.getInstance().setBoolean(Pref.WEB_KIT_FORCE_DARK_MODE_ENABLED, enabled);
+        UserPrefs.get(Profile.getLastUsedRegularProfile())
+                .setBoolean(Pref.WEB_KIT_FORCE_DARK_MODE_ENABLED, enabled);
     }
 
     private static boolean shouldEnableWebContentsDarkMode() {