Fix undefined method errors adding no-op stubs for methods needed by dart2js but irrelevant in ddc.…

tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index 14e96f2436e6c71eb6fc614567b9ec134ef4aeb1..9970ea6da1c6c3e4952bbb70d93efe9728dd07cc 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -5,26 +5,6 @@
 [error] Annotation can be only constant variable or constant constructor invocation (dart:core/stacktrace.dart, line 27, col 3)
 [error] The class 'StackTrace' does not have a constructor 'fromString' (dart:core/stacktrace.dart, line 31, col 48)
 [error] The class 'StackTrace' does not have a constructor 'fromString' (dart:core/stacktrace.dart, line 35, col 50)
-[error] The method 'convertDartClosureToJS' is not defined for the class 'HttpRequest'. (dart:html, line 19547, col 33)
-[error] The method 'convertDartClosureToJS' is not defined for the class 'HttpRequest'. (dart:html, line 19551, col 34)
-[error] The method 'convertDartClosureToJS' is not defined for the class 'MutationObserver'. (dart:html, line 24251, col 9)
-[error] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 42736, col 5)
-[error] The function 'convertDartClosureToJS' is not defined. (dart:html, line 42764, col 7)
-[error] The function 'convertDartClosureToJS' is not defined. (dart:html, line 42774, col 7)
-[error] The function 'findInterceptorConstructorForType' is not defined. (dart:html, line 42793, col 26)
-[error] The function 'findConstructorForNativeSubclassType' is not defined. (dart:html, line 42800, col 21)
-[error] The function 'getNativeInterceptor' is not defined. (dart:html, line 42807, col 3)
-[error] The function 'findDispatchTagForInterceptorClass' is not defined. (dart:html, line 42809, col 26)
-[error] The function 'setNativeSubclassDispatchRecord' is not defined. (dart:html, line 42843, col 3)
-[error] The method 'findInterceptorConstructorForType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 42866, col 28)
-[error] The method 'findConstructorForNativeSubclassType' is not defined for the class '_JSElementUpgrader'. (dart:html, line 42871, col 20)
-[error] The method 'getNativeInterceptor' is not defined for the class '_JSElementUpgrader'. (dart:html, line 42878, col 5)
-[error] The method 'findDispatchTagForInterceptorClass' is not defined for the class '_JSElementUpgrader'. (dart:html, line 42880, col 25)
-[error] The method 'setNativeSubclassDispatchRecord' is not defined for the class '_JSElementUpgrader'. (dart:html, line 42910, col 5)
-[error] The method 'makeLeafDispatchRecord' is not defined for the class 'KeyEvent'. (dart:html, line 43115, col 12)
-[error] The method 'setDispatchProperty' is not defined for the class 'KeyEvent'. (dart:html, line 43185, col 5)
-[error] The function 'convertDartClosureToJS' is not defined. (dart:html_common/conversions_dart2js.dart, line 89, col 14)
-[error] The function 'convertDartClosureToJS' is not defined. (dart:html_common/conversions_dart2js.dart, line 90, col 15)
 [error] The argument type 'Iterable<E>' cannot be assigned to the parameter type 'Iterable<int>'. (dart:js, line 424, col 40)
 [error] Field declaration Element.title cannot be overridden in StyleElement. (dart:svg, line 4732, col 3)
 [error] Field declaration Element.title= cannot be overridden in StyleElement. (dart:svg, line 4734, col 3)