Revert "Make some more targets publicly visible"

This reverts commit 60d179256213c7516808aff827637cab8a47de89.

Reason for revert: 

Breaks Chrome FYI:

/b/c/b/Linux_Builder/src/buildtools/linux64/gn gen //out/Release --check
  -> returned 1
ERROR at //build/split_static_library.gni:12:5: Dependency not allowed.
    static_library(target_name) {
    ^----------------------------
The item //content/renderer:renderer
can not depend on //third_party/webrtc/media:rtc_internal_video_codecs
because it is not in //third_party/webrtc/media:rtc_internal_video_codecs's visibility list: [
  //third_party/webrtc/*
  //third_party/webrtc_overrides/*
]

 https://logs.chromium.org/v/?s=chromium%2Fbb%2Fchromium.webrtc.fyi%2FLinux_Builder%2F23560%2F%2B%2Frecipes%2Fsteps%2Fgenerate_build_files%2F0%2Fstdout

Original change's description:
> Make some more targets publicly visible
> 
> To fix build errors introduced by
> https://webrtc-review.googlesource.com/c/src/+/24140
> 
> BUG=webrtc:8254
> NOTRY=true
> 
> Change-Id: I9cdf9cee39735368af78291134dbad70aebb7195
> Reviewed-on: https://webrtc-review.googlesource.com/38660
> Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21552}

TBR=mbonadei@webrtc.org,kwiberg@webrtc.org

Change-Id: I475ac382218fa77d33abc595f0773275d715a28e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:8254
Reviewed-on: https://webrtc-review.googlesource.com/38740
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21554}

media/BUILD.gn

@@ -139,7 +139,6 @@ rtc_static_library("rtc_constants") {
 }
 
 rtc_static_library("rtc_internal_video_codecs") {
-  visibility = [ "*" ]
   defines = []
   libs = []
   deps = [

modules/video_capture/BUILD.gn

@@ -13,7 +13,6 @@ import("../../webrtc.gni")
 # 'video_capture_internal_impl' depending on whether they want to
 # use the internal capturer.
 rtc_static_library("video_capture_module") {
-  visibility = [ "*" ]
   sources = [
     "device_info_impl.cc",
     "device_info_impl.h",

rtc_tools/BUILD.gn

@@ -199,7 +199,6 @@ if (!build_with_chromium) {
     }
 
     rtc_static_library("event_log_visualizer_utils") {
-      visibility = [ "*" ]
       sources = [
         "event_log_visualizer/analyzer.cc",
         "event_log_visualizer/analyzer.h",