Allow chromiumcontent to depend on webrtc_common

patches/common/webrtc/.patches.yaml

@@ -21,3 +21,16 @@ patches:
   owners: ajmacd
   file: fix_jitter_buffer_with_opus_dtx.patch
   description: "https://webrtc-review.googlesource.com/c/src/+/18181"
+-
+  owners: alexeykuzmin
+  file: allow_chromiumcontent_to_depend_on_webrtc_common.patch
+  description: |
+    ERROR at //chromiumcontent/BUILD.gn:152:3: Dependency not allowed.
+      static_library("webrtc_common") {
+      ^--------------------------------
+    The item //chromiumcontent:webrtc_common
+    can not depend on //third_party/webrtc:webrtc_common
+    because it is not in //third_party/webrtc:webrtc_common's visibility list: [
+      //third_party/webrtc/*
+      //third_party/webrtc_overrides/*
+    ]

patches/common/webrtc/allow_chromiumcontent_to_depend_on_webrtc_common.patch

@@ -0,0 +1,15 @@
+diff --git a/webrtc.gni b/webrtc.gni
+index f32e490f7..6bc8d1205 100644
+--- a/webrtc.gni
++++ b/webrtc.gni
+@@ -274,6 +274,10 @@ if (build_with_chromium) {
+   webrtc_default_visibility += [ webrtc_root + "/../webrtc_overrides/*" ]
+ }
+ 
++if (is_electron_build) {
++  webrtc_default_visibility += [ "//libchromiumcontent/chromiumcontent:webrtc_common" ]
++}
++
+ template("rtc_test") {
+   test(target_name) {
+     forward_variables_from(invoker,