Remove safe_browsing=2 functionality, replace with =3 mode.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 218f1d46f9460c4d5e6d76f1acb4addce2985374..405cba1fa5e4bd402a168f2a23b713e29a694576 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1805,9 +1805,9 @@ if (!is_android) {
               ".",
               "//chrome")
       deps += [ ":test_proto" ]
-    } else if (safe_browsing_mode == 3) {
+    } else if (safe_browsing_mode == 2) {
       sources += rebase_path(
-              chrome_tests_unit_gypi_values.chrome_unit_tests_mobile_extended_safe_browsing_sources + chrome_tests_unit_gypi_values.chrome_unit_tests_shared_safe_browsing_sources,
+              chrome_tests_unit_gypi_values.chrome_unit_tests_mobile_safe_browsing_sources + chrome_tests_unit_gypi_values.chrome_unit_tests_shared_safe_browsing_sources,
               ".",
               "//chrome")
     }