Restrict sending GWS ID only to signed in users

chrome/browser/android/data_usage/external_data_use_observer_bridge.h

Index: chrome/browser/android/data_usage/external_data_use_observer_bridge.h
diff --git a/chrome/browser/android/data_usage/external_data_use_observer_bridge.h b/chrome/browser/android/data_usage/external_data_use_observer_bridge.h
index 9bcb5d811033538be0a6ca7f7ed36ab7647e1339..b8ae22301ff408baac38d15b3b9be6a06ae97ba7 100644
--- a/chrome/browser/android/data_usage/external_data_use_observer_bridge.h
+++ b/chrome/browser/android/data_usage/external_data_use_observer_bridge.h
@@ -98,6 +98,8 @@ class ExternalDataUseObserverBridge {
   // should register as a data use observer.
   virtual void ShouldRegisterAsDataUseObserver(bool should_register) const;
 
+  void SetRegisterGoogleVariationID(bool register_google_variation_id);
+
  private:
   // Java listener that provides regular expressions to |this|. Data use
   // reports are submitted to |j_external_data_use_observer_|.
@@ -117,6 +119,9 @@ class ExternalDataUseObserverBridge {
   // True if matching rules are fetched for the first time.
   bool is_first_matching_rule_fetch_;
 
+  // True if Google variation ID should be registered.
+  bool register_google_variation_id_;
+
   // |io_task_runner_| accesses ExternalDataUseObserver members on IO thread.
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;