Sync the File API interfaces with the spec

Source/core/fileapi/FileReaderSync.idl

Index: Source/core/fileapi/FileReaderSync.idl
diff --git a/Source/core/fileapi/FileReaderSync.idl b/Source/core/fileapi/FileReaderSync.idl
index 8051a1d029005618b93a19f8837c57638c86db20..642d8e2237b45a085c8323817cdf0a3424a58e44 100644
--- a/Source/core/fileapi/FileReaderSync.idl
+++ b/Source/core/fileapi/FileReaderSync.idl
@@ -28,13 +28,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+// https://w3c.github.io/FileAPI/#FileReaderSync
+
 [
     GarbageCollected,
     Exposed=Worker,
     Constructor
 ] interface FileReaderSync {
     [CallWith=ExecutionContext, RaisesException] ArrayBuffer readAsArrayBuffer(Blob blob);
-    [CallWith=ExecutionContext, RaisesException] DOMString readAsBinaryString(Blob blob);
-    [CallWith=ExecutionContext, RaisesException] DOMString readAsText(Blob blob, optional DOMString encoding);
+    // TODO(philipj): readAsBinaryString() was removed from the spec in 2012:
+    // https://github.com/w3c/FileAPI/commit/8cce54559dc27bf8b8244f3f0ca9fb3e4d96efdb
+    [CallWith=ExecutionContext, RaisesException, Measure] DOMString readAsBinaryString(Blob blob);
+    [CallWith=ExecutionContext, RaisesException] DOMString readAsText(Blob blob, optional DOMString label);
     [CallWith=ExecutionContext, RaisesException] DOMString readAsDataURL(Blob blob);
 };