ErrorConsole Switch, Duplicate Error Detection, Dev Mode Check

extensions/common/switches.cc

Index: extensions/common/switches.cc
diff --git a/extensions/common/switches.cc b/extensions/common/switches.cc
index 228a557fa588bd984dac89028cfd3150cfe493b7..9feb004fe9efe97fb79c4cc905e36e2e6bc7bde9 100644
--- a/extensions/common/switches.cc
+++ b/extensions/common/switches.cc
@@ -22,6 +22,9 @@ const char kAllowScriptingGallery[]         = "allow-scripting-gallery";
 const char kEnableExperimentalExtensionApis[] =
     "enable-experimental-extension-apis";
 
+// Enables the ErrorConsole in the chrome:extensions page.
+const char kEnableErrorConsole[] = "enable-error-console";
+
 // Enables extensions running scripts on chrome:// URLs.
 // Extensions still need to explicitly request access to chrome:// URLs in the
 // manifest.