[Variations] Read the policy from profile prefs if on Android

chrome/browser/metrics/variations/variations_service.h

Index: chrome/browser/metrics/variations/variations_service.h
diff --git a/chrome/browser/metrics/variations/variations_service.h b/chrome/browser/metrics/variations/variations_service.h
index 2ad70265263a69d70d7e0fe23fbbd4ab14478ade..44e7f540c638b66d79791e696014c7a7404f85b8 100644
--- a/chrome/browser/metrics/variations/variations_service.h
+++ b/chrome/browser/metrics/variations/variations_service.h
@@ -26,6 +26,10 @@
 class PrefService;
 class PrefRegistrySimple;
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 namespace chrome_variations {
 
 class VariationsSeed;
@@ -67,9 +71,18 @@ class VariationsService
   // Register Variations related prefs in Local State.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
+  // Register Variations related prefs in the Profile prefs.
+  static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
+
   // Factory method for creating a VariationsService.
   static VariationsService* Create(PrefService* local_state);
 
+  // Set the PrefService responsible for getting policy-related preferences,
+  // such as the restrict parameter.
+  void set_policy_pref_service(PrefService* service) {
+    policy_pref_service_ = service;
+  }
+
  protected:
   // Starts the fetching process once, where |OnURLFetchComplete| is called with
   // the response.
@@ -110,6 +123,10 @@ class VariationsService
   // The pref service used to store persist the variations seed.
   PrefService* local_state_;
 
+  // Used to obtain policy-related preferences. Depending on the platform, will
+  // either be Local State or Profile prefs.
+  PrefService* policy_pref_service_;
+
   VariationsSeedStore seed_store_;
 
   // Contains the scheduler instance that handles timing for requests to the