Remove the public_deps to fileutils from test_support.

Bug: webrtc:8946
Change-Id: Ia01d8bb1b42485e29f26792b9266228743d7fd90
No-Presubmit: true
Reviewed-on: https://webrtc-review.googlesource.com/62100
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22465}
diff --git a/rtc_base/BUILD.gn b/rtc_base/BUILD.gn
index b4f2c17..50e0b24 100644
--- a/rtc_base/BUILD.gn
+++ b/rtc_base/BUILD.gn
@@ -926,6 +926,7 @@
       ":rtc_base_tests_utils",
       "../system_wrappers:field_trial_default",
       "../test:field_trial",
+      "../test:fileutils",
       "../test:test_support",
     ]
 
@@ -952,6 +953,7 @@
       ":rtc_base_tests_main",
       ":rtc_base_tests_utils",
       "../system_wrappers:system_wrappers",
+      "../test:fileutils",
       "../test:test_support",
       "//testing/gtest",
     ]
@@ -1020,6 +1022,7 @@
       ":stringutils",
       "../api:array_view",
       "../system_wrappers:system_wrappers",
+      "../test:fileutils",
       "../test:test_support",
     ]
   }
@@ -1146,6 +1149,7 @@
       ":stringutils",
       "../api:array_view",
       "../api:optional",
+      "../test:fileutils",
       "../test:test_support",
     ]
     public_deps = [