Add support for even more typed data on native ports

runtime/bin/file.cc

Index: runtime/bin/file.cc
diff --git a/runtime/bin/file.cc b/runtime/bin/file.cc
index 2b1151a360b845e902f68d30b4bb2a4d232e9c92..4814ae74b17c2d11828f7423cdc2c93a2cc39ccc 100644
--- a/runtime/bin/file.cc
+++ b/runtime/bin/file.cc
@@ -969,10 +969,19 @@ static int SizeInBytes(Dart_CObject::TypedDataType type) {
   switch (type) {
     case Dart_CObject::kInt8Array:
     case Dart_CObject::kUint8Array:
+    case Dart_CObject::kUint8ClampedArray:
       return 1;
     case Dart_CObject::kInt16Array:
     case Dart_CObject::kUint16Array:
       return 2;
+    case Dart_CObject::kInt32Array:
+    case Dart_CObject::kUint32Array:
+    case Dart_CObject::kFloat32Array:
+      return 4;
+    case Dart_CObject::kInt64Array:
+    case Dart_CObject::kUint64Array:
+    case Dart_CObject::kFloat64Array:
+      return 8;
     default:
       break;
   }