SafeBrowsingRealTimeUrlLookup: Enable by default for Desktop platforms

Bug: 963165
Change-Id: I782470e37747c460da3ba167a966af6d21023306
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2069478
Commit-Queue: Xinghui Lu <xinghuilu@chromium.org>
Reviewed-by: Xinghui Lu <xinghuilu@chromium.org>
Auto-Submit: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#744061}

components/safe_browsing/core/features.cc

@@ -72,8 +72,13 @@ const base::Feature kPasswordProtectionForSignedInUsers{
 const base::Feature kPromptAppForDeepScanning{
     "SafeBrowsingPromptAppForDeepScanning", base::FEATURE_DISABLED_BY_DEFAULT};
 
+#if BUILDFLAG(FULL_SAFE_BROWSING)
+const base::Feature kRealTimeUrlLookupEnabled{
+    "SafeBrowsingRealTimeUrlLookupEnabled", base::FEATURE_ENABLED_BY_DEFAULT};
+#else
 const base::Feature kRealTimeUrlLookupEnabled{
     "SafeBrowsingRealTimeUrlLookupEnabled", base::FEATURE_DISABLED_BY_DEFAULT};
+#endif
 
 const base::Feature kRealTimeUrlLookupEnabledWithToken{
     "SafeBrowsingRealTimeUrlLookupEnabledWithToken",