Wireframe scheduler implementation

chrome/browser/android/offline_pages/background_scheduler_bridge.h

Index: chrome/browser/android/offline_pages/background_scheduler_bridge.h
diff --git a/chrome/browser/android/offline_pages/background_scheduler_bridge.h b/chrome/browser/android/offline_pages/background_scheduler_bridge.h
index 6e7d72a8cecafd8780145e3331b5f2adfd695353..916b621c6c63692c5e68c33772fd50b63919f004 100644
--- a/chrome/browser/android/offline_pages/background_scheduler_bridge.h
+++ b/chrome/browser/android/offline_pages/background_scheduler_bridge.h
@@ -23,9 +23,17 @@ class BackgroundSchedulerBridge : public Scheduler {
   BackgroundSchedulerBridge();
   ~BackgroundSchedulerBridge() override;
 
+  // Attach to the Java side of the bridge if it is not already attached.
+  void AttachBridgeToJavaSide(JNIEnv* env);
+
   // Scheduler implementation.
   void Schedule(const TriggerCondition& trigger_condition) override;
   void Unschedule() override;
+
+  base::android::ScopedJavaGlobalRef<jobject> java_ref() { return java_ref_; }
+
+private:
+  base::android::ScopedJavaGlobalRef<jobject> java_ref_;
 };
 
 bool RegisterBackgroundSchedulerBridge(JNIEnv* env);