Clean up error handling logic for extension tab muting

chrome/browser/extensions/api/tabs/tabs_constants.cc

Index: chrome/browser/extensions/api/tabs/tabs_constants.cc
diff --git a/chrome/browser/extensions/api/tabs/tabs_constants.cc b/chrome/browser/extensions/api/tabs/tabs_constants.cc
index c6a63abc713e96633b57076e7eae6d3ebb54f230..bb5d7a2d4b34ba97490228a1df4e20678f6f962f 100644
--- a/chrome/browser/extensions/api/tabs/tabs_constants.cc
+++ b/chrome/browser/extensions/api/tabs/tabs_constants.cc
@@ -99,7 +99,11 @@ const char kSupportedInWindowsOnlyError[] = "Supported in Windows only";
 const char kInvalidWindowTypeError[] = "Invalid value for type";
 const char kInvalidWindowStateError[] = "Invalid value for state";
 const char kScreenshotsDisabled[] = "Taking screenshots has been disabled";
-
+const char kCannotUpdateMuteDisabled[] =
+    "Failed to update mute state for tab *, --* must be enabled";
+const char kCannotUpdateMuteCaptured[] =
+    "Cannot update mute state for tab *, tab has audio or video currently "
+    "being captured";
 const char kCannotDetermineLanguageOfUnloadedTab[] =
     "Cannot determine language: tab not loaded";