Enable V4LocalDatabaseManager based on Finch.

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 f5de477ca7427f03539b00ab01e261614c196733..c70bea2384ec74633587c038a59dd1b2bd9897d9 100644
--- a/chrome/browser/safe_browsing/safe_browsing_service.h
+++ b/chrome/browser/safe_browsing/safe_browsing_service.h
@@ -55,6 +55,7 @@ class SafeBrowsingProtocolManagerDelegate;
 class SafeBrowsingServiceFactory;
 class SafeBrowsingUIManager;
 class SafeBrowsingURLRequestContextGetter;
+class V4LocalDatabaseManager;
 struct V4ProtocolConfig;
 
 #if defined(FULL_SAFE_BROWSING)
@@ -176,6 +177,8 @@ class SafeBrowsingService : public base::RefCountedThreadSafe<
 
   virtual SafeBrowsingDatabaseManager* CreateDatabaseManager();
 
+  virtual V4LocalDatabaseManager* CreateV4LocalDatabaseManager();
+
   virtual SafeBrowsingUIManager* CreateUIManager();
 
   // Registers all the delayed analysis with the incident reporting service.
@@ -237,6 +240,9 @@ class SafeBrowsingService : public base::RefCountedThreadSafe<
   // Process the observed resource requests on the UI thread.
   void ProcessResourceRequest(const ResourceRequestInfo& request);
 
+  // Is the Pver4 database manager enabled? Controlled by Finch.
+  bool IsV4LocalDatabaseManagerEnabled();
+
   // The factory used to instanciate a SafeBrowsingService object.
   // Useful for tests, so they can provide their own implementation of
   // SafeBrowsingService.
@@ -282,6 +288,10 @@ class SafeBrowsingService : public base::RefCountedThreadSafe<
   // both UI and IO thread.
   scoped_refptr<SafeBrowsingDatabaseManager> database_manager_;
 
+  // The Pver4 local database manager handles the database and download logic
+  // Accessed on both UI and IO thread.
+  scoped_refptr<V4LocalDatabaseManager> v4_local_database_manager_;
+
   DISALLOW_COPY_AND_ASSIGN(SafeBrowsingService);
 };