Update mojo sdk to rev 8d45c89c30b230843c5bd6dd0693a555750946c0

third_party/mojo/src/mojo/public/dart/src/stub.dart

Index: third_party/mojo/src/mojo/public/dart/src/stub.dart
diff --git a/third_party/mojo/src/mojo/public/dart/src/stub.dart b/third_party/mojo/src/mojo/public/dart/src/stub.dart
index b4ab2930a48d161492814382a8aa6d99ebaf5d48..823873627ec267adaa25db536f4e036bca2990dd 100644
--- a/third_party/mojo/src/mojo/public/dart/src/stub.dart
+++ b/third_party/mojo/src/mojo/public/dart/src/stub.dart
@@ -20,6 +20,9 @@ abstract class Stub extends core.MojoEventStreamListener {
     // Query how many bytes are available.
     var result = endpoint.query();
     assert(result.status.isOk || result.status.isResourceExhausted);
+    if (result.bytesRead == 0) {
+      throw new MojoCodecError('Unexpected empty message.');
+    }
 
     // Read the data and view as a message.
     var bytes = new ByteData(result.bytesRead);
@@ -41,7 +44,7 @@ abstract class Stub extends core.MojoEventStreamListener {
                          response.buffer.lengthInBytes,
                          response.handles);
           if (!endpoint.status.isOk) {
-            throw "message pipe write failed: ${endpoint.status}";
+            throw 'message pipe write failed: ${endpoint.status}';
           }
           if (_isClosing && (_outstandingResponseFutures == 0)) {
             // This was the final response future for which we needed to send
@@ -63,9 +66,12 @@ abstract class Stub extends core.MojoEventStreamListener {
     throw 'Unexpected write signal in client.';
   }
 
-  void close() {
+  // NB: |nodefer| should only be true when calling close() while handling an
+  // exception thrown from handleRead(), e.g. when we receive a malformed
+  // message.
+  void close({bool nodefer : false}) {
     if (!isOpen) return;
-    if (isInHandler || (_outstandingResponseFutures > 0)) {
+    if (!nodefer && (isInHandler || (_outstandingResponseFutures > 0))) {
       // Either close() is being called from within handleRead() or
       // handleWrite(), or close() is being called while there are outstanding
       // response futures. Defer the actual close until all response futures