Add support for Uint32 fields and lists in Flat Buffers.

pkg/analyzer/test/src/summary/flat_buffers_test.dart

Index: pkg/analyzer/test/src/summary/flat_buffers_test.dart
diff --git a/pkg/analyzer/test/src/summary/flat_buffers_test.dart b/pkg/analyzer/test/src/summary/flat_buffers_test.dart
index 31cd564cb53ec8f2b454ea12682ea576316fe370..7ceed57f38a70d8371422f3e1b6e1d1ab6ff81d6 100644
--- a/pkg/analyzer/test/src/summary/flat_buffers_test.dart
+++ b/pkg/analyzer/test/src/summary/flat_buffers_test.dart
@@ -97,6 +97,7 @@ class BuilderTest {
       builder.addInt32(2, 20);
       builder.addOffset(3, stringOffset);
       builder.addInt32(4, 40);
+      builder.addUint32(5, 0x9ABCDEF0);
       Offset offset = builder.endTable();
       byteList = builder.finish(offset);
     }
@@ -107,6 +108,7 @@ class BuilderTest {
     expect(const Int32Reader().vTableGet(object, 2), 20);
     expect(const StringReader().vTableGet(object, 3), '12345');
     expect(const Int32Reader().vTableGet(object, 4), 40);
+    expect(const Uint32Reader().vTableGet(object, 5), 0x9ABCDEF0);
   }
 
   void test_writeList_ofFloat64() {
@@ -211,6 +213,20 @@ class BuilderTest {
     expect(items, contains('12345'));
     expect(items, contains('ABC'));
   }
+
+  void test_writeList_ofUint32() {
+    List<int> byteList;
+    {
+      Builder builder = new Builder(initialSize: 0);
+      Offset offset = builder.writeListUint32(<int>[1, 2, 0x9ABCDEF0]);
+      byteList = builder.finish(offset);
+    }
+    // read and verify
+    BufferPointer root = new BufferPointer.fromBytes(byteList);
+    List<int> items = const ListReader<int>(const Uint32Reader()).read(root);
+    expect(items, hasLength(3));
+    expect(items, orderedEquals(<int>[1, 2, 0x9ABCDEF0]));
+  }
 }
 
 class StringListWrapperImpl {