Refactor webrtc/modules/video_processing for GN check

webrtc/modules/video_processing/BUILD.gn

Index: webrtc/modules/video_processing/BUILD.gn
diff --git a/webrtc/modules/video_processing/BUILD.gn b/webrtc/modules/video_processing/BUILD.gn
index b1ab8ecc5e38f638af207f74bb4b2aee33478c01..d4faf2592aaa9537513cd700b7ba36aa036af37b 100644
--- a/webrtc/modules/video_processing/BUILD.gn
+++ b/webrtc/modules/video_processing/BUILD.gn
@@ -26,6 +26,7 @@ rtc_static_library("video_processing") {
   ]
 
   deps = [
+    "../../base:rtc_base_approved",
     "../../common_audio",
     "../../common_video",
     "../../modules/utility",
@@ -46,11 +47,20 @@ rtc_static_library("video_processing") {
 
 if (build_video_processing_sse2) {
   rtc_static_library("video_processing_sse2") {
+    # TODO(mbonadei): Remove (bugs.webrtc.org/6828)
+    # Errors on cyclic dependency with :video_processing if enabled.
+    check_includes = false
+
     sources = [
       "util/denoiser_filter_sse2.cc",
       "util/denoiser_filter_sse2.h",
     ]
 
+    deps = [
+      "../../base:rtc_base_approved",
+      "../../system_wrappers",
+    ]
+
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]