Revert of componentize SafeBrowsingService

components/safe_browsing/BUILD.gn

Index: components/safe_browsing/BUILD.gn
diff --git a/components/safe_browsing/BUILD.gn b/components/safe_browsing/BUILD.gn
index 2559fb0d2be4671ae0e008b2dbb106d1edf0d35c..51f35955daf4bd4875a826e1345041efd81ce059 100644
--- a/components/safe_browsing/BUILD.gn
+++ b/components/safe_browsing/BUILD.gn
@@ -4,20 +4,13 @@
 
 source_set("safe_browsing") {
   sources = [
-    "base_safe_browsing_service.cc",
-    "base_safe_browsing_service.h",
     "base_ui_manager.cc",
     "base_ui_manager.h",
   ]
 
   deps = [
     "//base:base",
-    "//components/safe_browsing/common:common",
-    "//components/safe_browsing_db:database_manager",
-    "//components/safe_browsing_db:remote_database_manager",
-    "//components/safe_browsing_db:safe_browsing_prefs",
     "//components/security_interstitials/content:security_interstitial_page",
     "//content/public/browser:browser",
-    "//net:net",
   ]
 }