Variations seed is pulled from the Java application on the first launch of Chrome

chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
index c5c1564f934cc2c01e0cd420b0881b04861c3966..2e59c4a7a8be8d839ae808b14fe804a90159edf8 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java
@@ -219,6 +219,44 @@ public final class PrefServiceBridge {
         }
     }
 
+    private static final String VARIATIONS_FIRST_RUN_SEED_SIGNATURE = "variations_seed_signature";
+    private static final String VARIATIONS_FIRST_RUN_SEED_COUNTRY = "variations_seed_country";
+
+    private static String getVariationsFirstRunSeedPref(Context context, String prefName) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getString(prefName, new String());
+    }
+
+    private static void setVariationsFirstRunSeedPref(
+            Context context, String prefName, String data) {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        prefs.edit().putString(prefName, data).apply();
+    }
+
+    private static byte[] sVariationsFirstRunSeedData;
+
+    public static void setVariationsFirstRunSeed(
+            Context context, byte[] rawSeed, String signature, String country) {
+        sVariationsFirstRunSeedData = rawSeed;
+        setVariationsFirstRunSeedPref(context, VARIATIONS_FIRST_RUN_SEED_SIGNATURE, signature);
+        setVariationsFirstRunSeedPref(context, VARIATIONS_FIRST_RUN_SEED_COUNTRY, country);
+    }
+
+    @CalledByNative
+    private static byte[] getVariationsFirstRunSeedData(Context context) {
+        return sVariationsFirstRunSeedData;
+    }
+
+    @CalledByNative
+    private static String getVariationsFirstRunSeedSignature(Context context) {
+        return getVariationsFirstRunSeedPref(context, VARIATIONS_FIRST_RUN_SEED_SIGNATURE);
+    }
+
+    @CalledByNative
+    private static String getVariationsFirstRunSeedCountry(Context context) {
+        return getVariationsFirstRunSeedPref(context, VARIATIONS_FIRST_RUN_SEED_COUNTRY);
+    }
+
     public boolean isAcceptCookiesEnabled() {
         return nativeGetAcceptCookiesEnabled();
     }