Deprecate new internal Dartium/JsInterop APIs that are public

tools/dom/templates/html/dartium/html_dartium.darttemplate

Index: tools/dom/templates/html/dartium/html_dartium.darttemplate
diff --git a/tools/dom/templates/html/dartium/html_dartium.darttemplate b/tools/dom/templates/html/dartium/html_dartium.darttemplate
index 4dc5fc93615d351b5e6f578939eb4c2b593c3d91..850b539fd9ff646346e34cb38ff020e1c85669d9 100644
--- a/tools/dom/templates/html/dartium/html_dartium.darttemplate
+++ b/tools/dom/templates/html/dartium/html_dartium.darttemplate
@@ -151,6 +151,7 @@ Future<Isolate> spawnDomUri(Uri uri, List<String> args, message) {
   return _Utils.spawnDomUri(uri.toString());
 }
 // FIXME: Can we make this private?
+@Deprecated("Internal Use Only")
 final htmlBlinkMap = {
   '_HistoryCrossFrame': () => _HistoryCrossFrame,
   '_LocationCrossFrame': () => _LocationCrossFrame,
@@ -259,6 +260,7 @@ $!TYPE_FUNCTION_MAP
 
 // TODO(terry): We may want to move this elsewhere if html becomes
 // a package to avoid dartium depending on pkg:html.
+@Deprecated("Internal Use Only")
 getHtmlCreateFunction(String key) {
   var result;
 
@@ -391,9 +393,13 @@ String _getCustomElementName(element) {
 
 /// An abstract class for all DOM objects we wrap in dart:html and related
 ///  libraries.
+///
+/// ** Internal Use Only **
+@Deprecated("Internal Use Only")
 class DartHtmlDomObject {
 
   /// The underlying JS DOM object.
+  @Deprecated("Internal Use Only")
   js.JsObject blink_jsObject;
 
 }
@@ -424,11 +430,13 @@ _upgradeHtmlElement(dartInstance) {
   return dartInstance;
 }
 
+@Deprecated("Internal Use Only")
 class DebugAssertException implements Exception {
   String message;
   DebugAssertException(this.message);
 }
 
+@Deprecated("Internal Use Only")
 debug_or_assert(message, expression) {
   if (!expression) {
     throw new DebugAssertException("$message");
@@ -441,6 +449,7 @@ debug_or_assert(message, expression) {
 //              user's this (this is needed for futures) and listener function.
 Map<int, Map<int, js.JsFunction>> _knownListeners = {};
 
+@Deprecated("Internal Use Only")
 js.JsFunction wrap_event_listener(theObject, Function listener) {
   var thisHashCode = theObject.hashCode;
   var listenerHashCode = identityHashCode(listener);
@@ -452,6 +461,7 @@ js.JsFunction wrap_event_listener(theObject, Function listener) {
   return _knownListeners[thisHashCode][listenerHashCode];
 }
 
+@Deprecated("Internal Use Only")
 Map<String, dynamic> convertNativeObjectToDartMap(js.JsObject jsObject) {
   var result = new Map();
   var keys = js.JsNative.callMethod(js.JsNative.getProperty(js.context, 'Object'), 'keys', [jsObject]);