Add back invalid natives that couldn't be removed due to analyzer warnings.

sdk/lib/_blink/dartium/_blink_dartium.dart

 /**
  * This library provides entry points to the native Blink code which backs
  * up the dart:html library.
  */
 library dart.dom._blink;
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
 import 'dart:_internal' hide Symbol, deprecated;
@@ skipping 5203 matching lines @@
 Native_SVGElementInstance_firstChild_Getter(mthis) native "SVGElementInstance_firstChild_Getter";
 
 Native_SVGElementInstance_lastChild_Getter(mthis) native "SVGElementInstance_lastChild_Getter";
 
 Native_SVGElementInstance_nextSibling_Getter(mthis) native "SVGElementInstance_nextSibling_Getter";
 
 Native_SVGElementInstance_parentNode_Getter(mthis) native "SVGElementInstance_parentNode_Getter";
 
 Native_SVGElementInstance_previousSibling_Getter(mthis) native "SVGElementInstance_previousSibling_Getter";
 
+Native_SVGElementInstanceList_length_Getter(mthis) native "SVGElementInstanceList_length_Getter";
+
 Native_SVGElementInstanceList_NativeIndexed_Getter(mthis, index) native "SVGElementInstanceList_item_Callback_RESOLVER_STRING_1_unsigned long";
 
 Native_SVGElementInstanceList_item_Callback(mthis, index) native "SVGElementInstanceList_item_Callback_RESOLVER_STRING_1_unsigned long";
 
 Native_SVGEllipseElement_cx_Getter(mthis) native "SVGEllipseElement_cx_Getter";
 
 Native_SVGEllipseElement_cy_Getter(mthis) native "SVGEllipseElement_cy_Getter";
 
 Native_SVGEllipseElement_rx_Getter(mthis) native "SVGEllipseElement_rx_Getter";
 
@@ skipping 1427 matching lines @@
     Native_SpeechGrammarList__addFromUri_2_Callback(mthis, src);
     return;
   }
 
 Native_SpeechGrammarList__addFromUri_1_Callback(mthis, src, weight) native "SpeechGrammarList_addFromUri_Callback_RESOLVER_STRING_2_DOMString_float";
 
 Native_SpeechGrammarList__addFromUri_2_Callback(mthis, src) native "SpeechGrammarList_addFromUri_Callback_RESOLVER_STRING_1_DOMString";
 
 Native_SpeechGrammarList_item_Callback(mthis, index) native "SpeechGrammarList_item_Callback_RESOLVER_STRING_1_unsigned long";
 
+Native_SpeechInputResultList_length_Getter(mthis) native "SpeechInputResultList_length_Getter";
+
 Native_SpeechInputResultList_NativeIndexed_Getter(mthis, index) native "SpeechInputResultList_item_Callback_RESOLVER_STRING_1_unsigned long";
 
 Native_SpeechInputResultList_item_Callback(mthis, index) native "SpeechInputResultList_item_Callback_RESOLVER_STRING_1_unsigned long";
 
   // Generated overload resolver
 Native_SpeechRecognition_SpeechRecognition() {
     return Native_SpeechRecognition__create_1constructorCallback();
   }
 
 Native_SpeechRecognition__create_1constructorCallback() native "SpeechRecognition_constructorCallback_RESOLVER_STRING_0_";
@@ skipping 1569 matching lines @@
 // _DOMStringMap native entry  points
 Native_DOMStringMap_containsKey(_DOMStringMap, key) native "DOMStringMap_containsKey_Callback";
 
 Native_DOMStringMap_item(_DOMStringMap, key) native "DOMStringMap_item_Callback";
 
 Native_DOMStringMap_setItem(_DOMStringMap, key, value) native "DOMStringMap_setItem_Callback";
 
 Native_DOMStringMap_remove(_DOMStringMap, key) native "DOMStringMap_remove_Callback";
 
 Native_DOMStringMap_get_keys(_DOMStringMap) native "DOMStringMap_getKeys_Callback";