Dart: Simplifies the handle watcher. Various cleanups and bugfixes.

mojo/public/dart/src/codec.dart

Index: mojo/public/dart/src/codec.dart
diff --git a/mojo/public/dart/src/codec.dart b/mojo/public/dart/src/codec.dart
index 5d017367e4afb3e676ce027519afe946869c6658..e51295837ea4c987856e392b23ab65066c7993a9 100644
--- a/mojo/public/dart/src/codec.dart
+++ b/mojo/public/dart/src/codec.dart
@@ -470,16 +470,20 @@ class Message {
 
   Message(this.buffer, this.handles);
 
-  int getHeaderNumBytes() => buffer.getUint32(kStructHeaderNumBytesOffset);
-  int getHeaderNumFields() => buffer.getUint32(kStructHeaderNumFieldsOffset);
-  int getName() => buffer.getUint32(kMessageNameOffset);
-  int getFlags() => buffer.getUint32(kMessageFlagsOffset);
-  bool isResponse() => (getFlags() & kMessageIsResponse) != 0;
-  bool expectsResponse() => (getFlags() & kMessageExpectsResponse) != 0;
-
-  void setRequestID(int id) {
-    buffer.setUint64(kMessageRequestIDOffset, id);
-  }
+  int get headerNumBytes =>
+      buffer.getUint32(kStructHeaderNumBytesOffset, Endianness.LITTLE_ENDIAN);
+  int get headerNumFields =>
+      buffer.getUint32(kStructHeaderNumFieldsOffset, Endianness.LITTLE_ENDIAN);
+  int get name =>
+      buffer.getUint32(kMessageNameOffset, Endianness.LITTLE_ENDIAN);
+  int get flags =>
+      buffer.getUint32(kMessageFlagsOffset, Endianness.LITTLE_ENDIAN);
+  int get requestID =>
+      buffer.getUint64(kMessageRequestIDOffset, Endianness.LITTLE_ENDIAN);
+      set requestID(int id) =>
+      buffer.setUint64(kMessageRequestIDOffset, id, Endianness.LITTLE_ENDIAN);
+  bool get isResponse => (flags & kMessageIsResponse) != 0;
+  bool get expectsResponse => (flags & kMessageExpectsResponse) != 0;
 }