Expand RuntimeErrors for ErrorConsole

Include two of our internal scripts (event_bindings and schemaUtil) as sources
for runtime errors.  Add tests for same.

BUG=21734

Review URL: https://chromiumcodereview.appspot.com/23923003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221652 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/extensions/browser/extension_error.h b/extensions/browser/extension_error.h
index 7e02bb3..735f2a2 100644
--- a/extensions/browser/extension_error.h
+++ b/extensions/browser/extension_error.h
@@ -120,7 +120,8 @@
 
 class RuntimeError : public ExtensionError {
  public:
-  RuntimeError(bool from_incognito,
+  RuntimeError(const std::string& extension_id,  // optional, sometimes unknown.
+               bool from_incognito,
                const base::string16& source,
                const base::string16& message,
                const StackTrace& stack_trace,