Enable gn check for //third_party/blink/renderer/modules/webrtc

Bug: 1108541
Change-Id: Id56dce83803e6389c8112be9bf7b1b057c78e58f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2314132Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791059}

.gn

@@ -312,7 +312,6 @@ no_check_targets = [
   "//third_party/blink/renderer/modules/webgl:*",  # 3 errors
   "//third_party/blink/renderer/modules/webgpu:*",  # 6 errors
   "//third_party/blink/renderer/modules/webmidi:*",  # 1 error
-  "//third_party/blink/renderer/modules/webrtc:*",  # 1 error
   "//third_party/blink/renderer/modules/webtransport:*",  # 16 errors
   "//third_party/blink/renderer/modules/worklet:*",  # 2 errors
   "//third_party/blink/renderer/modules/xr:*",  # 13 errors

third_party/blink/renderer/modules/webrtc/BUILD.gn

@@ -14,4 +14,6 @@ blink_modules_sources("webrtc") {
     "webrtc_audio_renderer.cc",
     "webrtc_audio_renderer.h",
   ]
+
+  deps = [ "//third_party/blink/renderer/modules/mediastream" ]
 }