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

chrome/browser/metrics/variations/chrome_variations_service_client.h

Index: chrome/browser/metrics/variations/chrome_variations_service_client.h
diff --git a/chrome/browser/metrics/variations/chrome_variations_service_client.h b/chrome/browser/metrics/variations/chrome_variations_service_client.h
index 8abe72ef7697f13a361ed9b8b326784733065f56..6f1512ced4135564b72779208f0679ef18ae50fe 100644
--- a/chrome/browser/metrics/variations/chrome_variations_service_client.h
+++ b/chrome/browser/metrics/variations/chrome_variations_service_client.h
@@ -5,8 +5,17 @@
 #ifndef CHROME_BROWSER_METRICS_VARIATIONS_CHROME_VARIATIONS_SERVICE_CLIENT_H_
 #define CHROME_BROWSER_METRICS_VARIATIONS_CHROME_VARIATIONS_SERVICE_CLIENT_H_
 
+#include <string>
+
 #include "base/basictypes.h"
+#include "base/bind.h"
+
+#if defined(OS_ANDROID)
+#include "chrome/browser/android/preferences/pref_service_bridge.h"
+#endif  // OS_ANDROID
+
 #include "components/variations/service/variations_service_client.h"
+#include "components/variations/variations_seed_store.h"
 
 #if defined(OS_WIN)
 #include "chrome/browser/metrics/variations/variations_registry_syncer_win.h"
@@ -31,6 +40,13 @@ class ChromeVariationsServiceClient
   bool OverridesRestrictParameter(std::string* parameter) override;
   void OnInitialStartup() override;
 
+#if defined(OS_ANDROID)
+  base::Callback<void(std::string*, std::string*, std::string*)>
+    GetVariationsFirstRunSeedCallback() override {
+      return base::Bind(&PrefServiceBridge::GetVariationsFirstRunSeed);
+    }
+#endif  // OS_ANDROID
+
  private:
 #if defined(OS_WIN)
   // Starts syncing Google Update Variation IDs with the registry.