Reapply support for new Uint8ClampedArray in dart:dom.

tests/dom/typed_arrays_2_test.dart

Index: tests/dom/typed_arrays_2_test.dart
diff --git a/tests/dom/typed_arrays_2_test.dart b/tests/dom/typed_arrays_2_test.dart
index 62b8034be6a4c9928a795c4dde6d1bd97d072866..e5db2a7ef54b179ffdcdc4f45ba4bd434c2925e4 100644
--- a/tests/dom/typed_arrays_2_test.dart
+++ b/tests/dom/typed_arrays_2_test.dart
@@ -45,8 +45,74 @@ main() {
       Expect.equals(0x03020100, a2[14]);
   });
 
+  test('fromBufferClampedTest_dynamic', () {
+      var a1 = new Uint8ClampedArray(1024);
+      for (int i = 0; i < a1.length; i++) {
+        a1[i] = i;
+      }
+
+      var a2 = new Uint32Array.fromBuffer(a1.buffer);
+      Expect.equals(1024 ~/ 4, a2.length);
+      Expect.equals(0x03020100, a2[0]);
+      Expect.equals(0x07060504, a2[1]);
+      Expect.equals(0x0B0A0908, a2[2]);
+      Expect.equals(0xCBCAC9C8, a2[50]);
+      Expect.equals(0xCFCECDCC, a2[51]);
+      Expect.equals(0x03020100, a2[64]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, 200);
+      Expect.equals((1024 - 200) ~/ 4, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, 456, 20);
+      Expect.equals(20, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, length: 30, byteOffset: 456);
+      Expect.equals(30, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+  });
+
   test('fromBufferTest_typed', () {
-      Uint8Array a1 = new Uint8Array(1024);
+      Uint8ClampedArray a1 = new Uint8ClampedArray(1024);
+      for (int i = 0; i < a1.length; i++) {
+        a1[i] = i;
+      }
+
+      Uint32Array a2 = new Uint32Array.fromBuffer(a1.buffer);
+      Expect.equals(1024 ~/ 4, a2.length);
+      Expect.equals(0x03020100, a2[0]);
+      Expect.equals(0xCBCAC9C8, a2[50]);
+      Expect.equals(0xCFCECDCC, a2[51]);
+      Expect.equals(0x03020100, a2[64]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, 200);
+      Expect.equals((1024 - 200) ~/ 4, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, 456, 20);
+      Expect.equals(20, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+
+      a2 = new Uint32Array.fromBuffer(a1.buffer, length: 30, byteOffset: 456);
+      Expect.equals(30, a2.length);
+      Expect.equals(0xCBCAC9C8, a2[0]);
+      Expect.equals(0xCFCECDCC, a2[1]);
+      Expect.equals(0x03020100, a2[14]);
+  });
+
+  test('fromBufferClampedTest_typed', () {
+      Uint8ClampedArray a1 = new Uint8ClampedArray(1024);
       for (int i = 0; i < a1.length; i++) {
         a1[i] = i;
       }