reactivation of subresource filter (#1302)

diff --git a/chrome/browser/subresource_filter/chrome_content_subresource_filter_throttle_manager_factory.cc b/chrome/browser/subresource_filter/chrome_content_subresource_filter_throttle_manager_factory.cc

--- a/chrome/browser/subresource_filter/chrome_content_subresource_filter_throttle_manager_factory.cc

+++ b/chrome/browser/subresource_filter/chrome_content_subresource_filter_throttle_manager_factory.cc

@@ -12,6 +12,7 @@

 #include "components/subresource_filter/content/browser/content_subresource_filter_throttle_manager.h"

 #include "components/subresource_filter/content/browser/ruleset_service.h"

@@ -18,10 +18,14 @@ namespace {

 // available. Otherwise returns nullptr.

 const scoped_refptr<safe_browsing::SafeBrowsingDatabaseManager>

 GetDatabaseManagerFromSafeBrowsingService() {

+#if defined(FULL_SAFE_BROWSING)

 namespace {

 // Returns a scoped refptr to the SafeBrowsingService's database manager, if

@@ -25,9 +26,11 @@ GetDatabaseManagerFromSafeBrowsingService() {

   safe_browsing::SafeBrowsingService* safe_browsing_service =

       g_browser_process->safe_browsing_service();

   return safe_browsing_service ? safe_browsing_service->database_manager()

                                : nullptr;

+#else

+  return nullptr;

+#endif

 }

 }  // namespace

+#endif

 void CreateSubresourceFilterThrottleManagerForWebContents(

     content::WebContents* web_contents) {

+#if defined(FULL_SAFE_BROWSING)

   subresource_filter::RulesetService* ruleset_service =

       g_browser_process->subresource_filter_ruleset_service();

   subresource_filter::VerifiedRulesetDealer::Handle* dealer =

@@ -38,4 +41,5 @@ void CreateSubresourceFilterThrottleManagerForWebContents(

           SubresourceFilterProfileContextFactory::GetForProfile(

               Profile::FromBrowserContext(web_contents->GetBrowserContext())),

           GetDatabaseManagerFromSafeBrowsingService(), dealer);

+#endif

 }

diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn

--- a/chrome/browser/ui/BUILD.gn

+++ b/chrome/browser/ui/BUILD.gn