Add ability to mute chrome:// pages

Bug: 787743, 785711, 782134
Change-Id: I77fe9a7192697ebe82734231ae709c2094b57b62
Reviewed-on: https://chromium-review.googlesource.com/791813
Commit-Queue: Tommy Steimel <[email protected]>
Reviewed-by: Mounir Lamouri <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Cr-Commit-Position: refs/heads/master@{#520203}
diff --git a/chrome/browser/extensions/extension_tab_util.cc b/chrome/browser/extensions/extension_tab_util.cc
index 596d163d..44e2ba8 100644
--- a/chrome/browser/extensions/extension_tab_util.cc
+++ b/chrome/browser/extensions/extension_tab_util.cc
@@ -446,6 +446,7 @@
       break;
     case TabMutedReason::AUDIO_INDICATOR:
     case TabMutedReason::CONTENT_SETTING:
+    case TabMutedReason::CONTENT_SETTING_CHROME:
     case TabMutedReason::CONTEXT_MENU:
       info->reason = api::tabs::MUTED_INFO_REASON_USER;
       break;