Very basic change to add a TriggerManager class owned by SafeBrowsingService.

chrome/browser/safe_browsing/safe_browsing_service.h

Index: chrome/browser/safe_browsing/safe_browsing_service.h
diff --git a/chrome/browser/safe_browsing/safe_browsing_service.h b/chrome/browser/safe_browsing/safe_browsing_service.h
index c28a4442e1ea3d74af3e8afc1653d0de4e28addd..f18e7700b192941653635ac2317d60ce094ad5ed 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -65,6 +65,7 @@ class SafeBrowsingProtocolManagerDelegate;
 class SafeBrowsingServiceFactory;
 class SafeBrowsingUIManager;
 class SafeBrowsingURLRequestContextGetter;
+class TriggerManager;
 struct V4ProtocolConfig;
 
 // Construction needs to happen on the main thread.
@@ -281,6 +282,8 @@ class SafeBrowsingService : public base::RefCountedThreadSafe<
 
   void RemovePasswordProtectionService(Profile* profile);
 
+  void CreateTriggerManager();
+
   // The factory used to instantiate a SafeBrowsingService object.
   // Useful for tests, so they can provide their own implementation of
   // SafeBrowsingService.
@@ -356,6 +359,8 @@ class SafeBrowsingService : public base::RefCountedThreadSafe<
   std::map<Profile*, std::unique_ptr<ChromePasswordProtectionService>>
       password_protection_service_map_;
 
+  std::unique_ptr<TriggerManager> trigger_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingService);
 };