Revert of [libfuzzer] supporting libfuzzer on mac with asan

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index bb5c226eb06b7f0b6c42652bcbb26b1079efff1a..1b4a952b56ec7736cfc19b5ad1c11a92016629a1 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -651,6 +651,8 @@ group("gn_only") {
       "//media/cast:udp_proxy",
       "//native_client/src/trusted/debug_stub:gdb_rsp_unittest",
       "//storage/browser:dump_file_system",
+      "//testing/libfuzzer/fuzzers",
+      "//testing/libfuzzer/tests:libfuzzer_tests",
       "//third_party/angle:libANGLE",
       "//third_party/angle:libEGL",
       "//third_party/angle:libGLESv2",
@@ -718,13 +720,6 @@ group("gn_only") {
     }
   }
 
-  if ((is_linux && !is_chromeos && !is_chromecast) || is_mac) {
-    deps += [
-      "//testing/libfuzzer/fuzzers",
-      "//testing/libfuzzer/tests:libfuzzer_tests",
-    ]
-  }
-
   if (enable_nacl) {
     deps += [ "//native_client_sdk/src:nacl_core_sdk" ]
   }