Decoupling rtc_base from apple specific code [without cyclic deps]

webrtc/modules/video_coding/BUILD.gn

Index: webrtc/modules/video_coding/BUILD.gn
diff --git a/webrtc/modules/video_coding/BUILD.gn b/webrtc/modules/video_coding/BUILD.gn
index 8d15e8b72401f9441801d48302cfa98ba36268f1..d56e7caf99d75d4f79366653845da4316082f268 100644
--- a/webrtc/modules/video_coding/BUILD.gn
+++ b/webrtc/modules/video_coding/BUILD.gn
@@ -325,6 +325,9 @@ if (rtc_include_tests) {
       "../video_capture",
       "//third_party/gflags",
     ]
+    if (is_ios) {
+      deps += [ "../../rtc_base:rtc_base_apple" ]
+    }
   }  # video_quality_measurement
 
   rtc_source_set("video_codecs_test_framework") {
@@ -499,7 +502,10 @@ if (rtc_include_tests) {
     }
 
     if (is_ios || is_mac) {
-      deps += [ ":plot_videoprocessor_integrationtest_bundle_data" ]
+      deps += [
+        ":plot_videoprocessor_integrationtest_bundle_data",
+        "../../rtc_base:rtc_base_apple",
+      ]
     }
 
     # TODO(brandtr): Remove this define when the modules_tests target properly