Revert "Revert "Make some more targets publicly visible""

This reverts commit 55d1809d0d73592a1ddf4f0fb02ce7444fa066aa.

Reason for revert: This cl was not the culprit for breaking chrome content/renderer deps.

Original change's description:
> 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}

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

Change-Id: If8e9b7b1c934ec4b5ed61941c845e62e43bef97e
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:8254
Reviewed-on: https://webrtc-review.googlesource.com/38841
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21559}
diff --git a/rtc_tools/BUILD.gn b/rtc_tools/BUILD.gn
index ac7e44d..4066487 100644
--- a/rtc_tools/BUILD.gn
+++ b/rtc_tools/BUILD.gn
@@ -199,6 +199,7 @@
     }
 
     rtc_static_library("event_log_visualizer_utils") {
+      visibility = [ "*" ]
       sources = [
         "event_log_visualizer/analyzer.cc",
         "event_log_visualizer/analyzer.h",