Dartium changes for custom element lifecycle events.

Source/bindings/dart/DartUtilities.h

Index: Source/bindings/dart/DartUtilities.h
diff --git a/Source/bindings/dart/DartUtilities.h b/Source/bindings/dart/DartUtilities.h
index 30a09d382a689cd440f0be98536e360d826e93a4..4e763a34a2074804e2445c08c6d84d2d3a05f31b 100644
--- a/Source/bindings/dart/DartUtilities.h
+++ b/Source/bindings/dart/DartUtilities.h
@@ -79,6 +79,7 @@ class DartUtilities {
 public:
     static const char* htmlLibraryName;
     static const char* indexedDBLibraryName;
+    static const char* svgLibraryName;
 
     static Dart_Handle stringImplToDartString(StringImpl*);
     static Dart_Handle stringToDartString(const String&);
@@ -474,6 +475,8 @@ public:
     static bool isBlob(Dart_Handle);
     static bool isImageData(Dart_Handle);
     static bool isIDBKeyRange(Dart_Handle);
+    static bool objectIsType(Dart_Handle, const char* libraryName, const char* typeName);
+    static bool isTypeSubclassOf(Dart_Handle type, const char* libraryName, const char* typeName);
 
     static bool isTypedData(Dart_Handle);
 
@@ -545,7 +548,6 @@ public:
 
 private:
     static PassRefPtr<StringImpl> toStringImpl(Dart_Handle, intptr_t charsize, intptr_t strlength, Dart_Handle& exception);
-    static bool objectIsType(Dart_Handle, const char* libraryName, const char* typeName);
 };
 
 class DartIsolateScope {