Allow safe_browsing_mode overriding in gn build

build/config/features.gni

Index: build/config/features.gni
diff --git a/build/config/features.gni b/build/config/features.gni
index 661170ecdb45b61907af1b75918019f80bc724f9..290c1d6d831f70ad296ea8b6c5c12fe66d13b2ee 100644
--- a/build/config/features.gni
+++ b/build/config/features.gni
@@ -85,6 +85,20 @@ declare_args() {
   # Enables browser side Content Decryption Modules. Required for embedders
   # (e.g. Android and ChromeCast) that use a browser side CDM.
   enable_browser_cdms = is_android
+
+  # Variable safe_browsing is used to control the build time configuration for
+  # safe browsing feature. Safe browsing can be compiled in 3 different levels:
+  # 0 disables it, 1 enables it fully, and 2 enables only UI and reporting
+  # features without enabling phishing and malware detection. This is useful to
+  # integrate a third party phishing/malware detection to existing safe browsing
+  # logic.
+  if (is_android) {
+    safe_browsing_mode = 2
+  } else if (is_ios) {
+    safe_browsing_mode = 0
+  } else {
+    safe_browsing_mode = 1
+  }
 }
 
 # Additional dependent variables -----------------------------------------------
@@ -134,19 +148,6 @@ use_dbus = is_linux
 
 enable_extensions = !is_android && !is_ios
 
-# Variable safe_browsing is used to control the build time configuration for
-# safe browsing feature. Safe browsing can be compiled in 3 different levels: 0
-# disables it, 1 enables it fully, and 2 enables only UI and reporting features
-# without enabling phishing and malware detection. This is useful to integrate
-# a third party phishing/malware detection to existing safe browsing logic.
-if (is_android) {
-  safe_browsing_mode = 2
-} else if (is_ios) {
-  safe_browsing_mode = 0
-} else {
-  safe_browsing_mode = 1
-}
-
 enable_task_manager = !is_ios && !is_android
 
 use_cups = is_desktop_linux || is_mac