Remove unused switch --enable-errdialogs

chrome/test/base/test_switches.cc

Index: chrome/test/base/test_switches.cc
diff --git a/chrome/test/base/test_switches.cc b/chrome/test/base/test_switches.cc
index b1b16ac4a581b7aff7358405d521a17cd2bda670..a092c4267355d79a88c2846c477bdd90f9450bbd 100644
--- a/chrome/test/base/test_switches.cc
+++ b/chrome/test/base/test_switches.cc
@@ -9,9 +9,6 @@ namespace switches {
 // Also emit full event trace logs for successful tests.
 const char kAlsoEmitSuccessLogs[] = "also-emit-success-logs";
 
-// Enable displaying error dialogs (for debugging).
-const char kEnableErrorDialogs[] = "enable-errdialogs";
-
 #if defined(OS_WIN)
 // Force browser tests to run in Ash/Metro on Windows 8.
 const char kAshBrowserTests[] = "ash-browsertests";