Add comment to test-only functions in production code

Change-Id: I996f88012e8d61042c5bcd9cd72030e3020b3fa9

includes/language/LanguageConverter.php

@@ -1123,7 +1123,7 @@ abstract class LanguageConverter implements ILanguageConverter {
 	 *
 	 * Also used by test suites which need to reset the converter state.
 	 *
-	 * @private
+	 * Called by ParserTestRunner with the help of TestingAccessWrapper
 	 */
 	private function reloadTables() {
 		if ( $this->mTables ) {

includes/language/TrivialLanguageConverter.php

@@ -151,7 +151,7 @@ class TrivialLanguageConverter implements ILanguageConverter {
 	/**
 	 * Used by test suites which need to reset the converter state.
 	 *
-	 * @private
+	 * Called by ParserTestRunner with the help of TestingAccessWrapper
 	 */
 	private function reloadTables() {
 	}

includes/parser/Parser.php

@@ -6155,6 +6155,9 @@ class Parser {
 	/**
 	 * Strip/replaceVariables/unstrip for preprocessor regression testing
 	 *
+	 * Called in preprocessorFuzzTest.php maintenance script
+	 * with the help of TestingAccessWrapper to hide it from the public interface
+	 *
 	 * @param string $text
 	 * @param PageReference $page
 	 * @param ParserOptions $options
@@ -6175,6 +6178,11 @@ class Parser {
 	}
 
 	/**
+	 * Strip/replaceVariables/unstrip for preprocessor regression testing
+	 *
+	 * Called in preprocessorFuzzTest.php maintenance script
+	 * with the help of TestingAccessWrapper to hide it from the public interface
+	 *
 	 * @param string $text
 	 * @param PageReference $page
 	 * @param ParserOptions $options
@@ -6185,6 +6193,11 @@ class Parser {
 	}
 
 	/**
+	 * Strip/replaceVariables/unstrip for preprocessor regression testing
+	 *
+	 * Called in preprocessorFuzzTest.php maintenance script
+	 * with the help of TestingAccessWrapper to hide it from the public interface
+	 *
 	 * @param string $text
 	 * @param PageReference $page
 	 * @param ParserOptions $options