Make tab audible and muted states and cause available for an extension API

chrome/browser/ui/tabs/tab_utils.cc

Index: chrome/browser/ui/tabs/tab_utils.cc
diff --git a/chrome/browser/ui/tabs/tab_utils.cc b/chrome/browser/ui/tabs/tab_utils.cc
index a61996701309b28c8d94d985247a30ef396d64ae..f1d7035b7caf747bf6c38035d1e2b1c373d157a1 100644
--- a/chrome/browser/ui/tabs/tab_utils.cc
+++ b/chrome/browser/ui/tabs/tab_utils.cc
@@ -252,10 +252,12 @@ bool CanToggleAudioMute(content::WebContents* contents) {
   return false;
 }
 
-void SetTabAudioMuted(content::WebContents* contents, bool mute) {
+void SetTabAudioMuted(content::WebContents* contents,
+                      bool muted,
+                      const std::string& cause) {
   if (!contents || !chrome::CanToggleAudioMute(contents))
     return;
-  contents->SetAudioMuted(mute);
+  contents->SetAudioMuted(muted, cause);
 }
 
 bool IsTabAudioMuted(content::WebContents* contents) {