Remove unused external typed data factories.

runtime/lib/typed_data.dart

Index: runtime/lib/typed_data.dart
diff --git a/runtime/lib/typed_data.dart b/runtime/lib/typed_data.dart
index f37cacb1c9ac0509e44b661f97f35d4addc2100d..d8b4324f5e995e13212a2e630427ccc8cdd19ac2 100644
--- a/runtime/lib/typed_data.dart
+++ b/runtime/lib/typed_data.dart
@@ -1873,10 +1873,6 @@ class Float64x2List extends _TypedList with _Float64x2ListMixin implements List<
 
 
 class _ExternalInt8Array extends _TypedList with _IntListMixin implements Int8List {
-  // Factory constructors.
-
-  factory _ExternalInt8Array(int length) native "ExternalTypedData_Int8Array_new";
-
   // Method(s) implementing the List interface.
   int operator[](int index) {
     if (index < 0 || index >= length) {
@@ -1909,10 +1905,6 @@ class _ExternalInt8Array extends _TypedList with _IntListMixin implements Int8Li
 
 
 class _ExternalUint8Array extends _TypedList with _IntListMixin implements Uint8List {
-  // Factory constructors.
-
-  factory _ExternalUint8Array(int length) native "ExternalTypedData_Uint8Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -1946,10 +1938,6 @@ class _ExternalUint8Array extends _TypedList with _IntListMixin implements Uint8
 
 
 class _ExternalUint8ClampedArray extends _TypedList with _IntListMixin implements Uint8ClampedList {
-  // Factory constructors.
-
-  factory _ExternalUint8ClampedArray(int length) native "ExternalTypedData_Uint8ClampedArray_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -1983,10 +1971,6 @@ class _ExternalUint8ClampedArray extends _TypedList with _IntListMixin implement
 
 
 class _ExternalInt16Array extends _TypedList with _IntListMixin implements Int16List {
-  // Factory constructors.
-
-  factory _ExternalInt16Array(int length) native "ExternalTypedData_Int16Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2028,10 +2012,6 @@ class _ExternalInt16Array extends _TypedList with _IntListMixin implements Int16
 
 
 class _ExternalUint16Array extends _TypedList with _IntListMixin implements Uint16List {
-  // Factory constructors.
-
-  factory _ExternalUint16Array(int length) native "ExternalTypedData_Uint16Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2073,10 +2053,6 @@ class _ExternalUint16Array extends _TypedList with _IntListMixin implements Uint
 
 
 class _ExternalInt32Array extends _TypedList with _IntListMixin implements Int32List {
-  // Factory constructors.
-
-  factory _ExternalInt32Array(int length) native "ExternalTypedData_Int32Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2118,10 +2094,6 @@ class _ExternalInt32Array extends _TypedList with _IntListMixin implements Int32
 
 
 class _ExternalUint32Array extends _TypedList with _IntListMixin implements Uint32List {
-  // Factory constructors.
-
-  factory _ExternalUint32Array(int length) native "ExternalTypedData_Uint32Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2163,10 +2135,6 @@ class _ExternalUint32Array extends _TypedList with _IntListMixin implements Uint
 
 
 class _ExternalInt64Array extends _TypedList with _IntListMixin implements Int64List {
-  // Factory constructors.
-
-  factory _ExternalInt64Array(int length) native "ExternalTypedData_Int64Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2208,10 +2176,6 @@ class _ExternalInt64Array extends _TypedList with _IntListMixin implements Int64
 
 
 class _ExternalUint64Array extends _TypedList with _IntListMixin implements Uint64List {
-  // Factory constructors.
-
-  factory _ExternalUint64Array(int length) native "ExternalTypedData_Uint64Array_new";
-
   // Method(s) implementing the List interface.
 
   int operator[](int index) {
@@ -2253,10 +2217,6 @@ class _ExternalUint64Array extends _TypedList with _IntListMixin implements Uint
 
 
 class _ExternalFloat32Array extends _TypedList with _DoubleListMixin implements Float32List {
-  // Factory constructors.
-
-  factory _ExternalFloat32Array(int length) native "ExternalTypedData_Float32Array_new";
-
   // Method(s) implementing the List interface.
 
   double operator[](int index) {
@@ -2298,10 +2258,6 @@ class _ExternalFloat32Array extends _TypedList with _DoubleListMixin implements
 
 
 class _ExternalFloat64Array extends _TypedList with _DoubleListMixin implements Float64List {
-  // Factory constructors.
-
-  factory _ExternalFloat64Array(int length) native "ExternalTypedData_Float64Array_new";
-
   // Method(s) implementing the List interface.
 
   double operator[](int index) {
@@ -2343,10 +2299,6 @@ class _ExternalFloat64Array extends _TypedList with _DoubleListMixin implements
 
 
 class _ExternalFloat32x4Array extends _TypedList with _Float32x4ListMixin implements Float32x4List {
-  // Factory constructors.
-
-  factory _ExternalFloat32x4Array(int length) native "ExternalTypedData_Float32x4Array_new";
-
   // Method(s) implementing the List interface.
 
   Float32x4 operator[](int index) {
@@ -2388,10 +2340,6 @@ class _ExternalFloat32x4Array extends _TypedList with _Float32x4ListMixin implem
 
 
 class _ExternalInt32x4Array extends _TypedList with _Int32x4ListMixin implements Int32x4List {
-  // Factory constructors.
-
-  factory _ExternalInt32x4Array(int length) native "ExternalTypedData_Int32x4Array_new";
-
   // Method(s) implementing the List interface.
 
   Int32x4 operator[](int index) {
@@ -2433,10 +2381,6 @@ class _ExternalInt32x4Array extends _TypedList with _Int32x4ListMixin implements
 
 
 class _ExternalFloat64x2Array extends _TypedList with _Float64x2ListMixin implements Float64x2List {
-  // Factory constructors.
-
-  factory _ExternalFloat64x2Array(int length) native "ExternalTypedData_Float64x2Array_new";
-
   // Method(s) implementing the List interface.
 
   Float64x2 operator[](int index) {