[Android] New params for VariationsSeedFetcher.getConnectionString

Chromium change:
https://github.com/chromium/chromium/commit/fff162f502f2e7d92cb76534d2c00e1c93a1dbe4

WebView: Adding non-embedded code for Fast Variations Mitigation.
In order to increase variations seed uptake speed, WebView is adding
a new safe mode mitigation for this very purpose.

Bug: 1395513

components/variations/android/java/src/org/chromium/components/variations/firstrun/BraveVariationsSeedFetcher.java

@@ -27,15 +27,14 @@ public class BraveVariationsSeedFetcher extends VariationsSeedFetcher {
 
     @VisibleForTesting
     @Override
-    protected String getConnectionString(@VariationsPlatform int platform, String restrictMode,
-            String milestone, String channel) {
+    protected String getConnectionString(SeedFetchParameters params) {
         if (!CommandLine.getInstance().hasSwitch(VariationsSwitches.VARIATIONS_SERVER_URL)) {
             // If there is no alternative variations server specified, we still don't want to
             // connect to Google's server.
             return "";
         }
 
-        String urlString = super.getConnectionString(platform, restrictMode, milestone, channel);
+        String urlString = super.getConnectionString(params);
         // Relacing Google's variations server with ours, but keep parameters.
         int paramsPosition = urlString.indexOf("?", 0);
         urlString =