Update mojo sdk to rev 7214b7ec7d27563b2666afad86cf1c5895c56c18

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 1ce098239cec317e1093c564d98eb7a319e1f890..6695f07a3353a0cc088cc65de311b5f1a6db452e 100644
--- a/third_party/mojo/src/mojo/public/dart/src/stub.dart
+++ b/third_party/mojo/src/mojo/public/dart/src/stub.dart
@@ -7,8 +7,10 @@ part of bindings;
 abstract class Stub extends core.MojoEventStreamListener {
   int _outstandingResponseFutures = 0;
   bool _isClosing = false;
+  Completer _closeCompleter;
 
-  Stub(core.MojoMessagePipeEndpoint endpoint) : super(endpoint);
+  Stub.fromEndpoint(core.MojoMessagePipeEndpoint endpoint)
+      : super.fromEndpoint(endpoint);
 
   Stub.fromHandle(core.MojoHandle handle) : super.fromHandle(handle);
 
@@ -41,9 +43,7 @@ abstract class Stub extends core.MojoEventStreamListener {
         _outstandingResponseFutures--;
         if (isOpen) {
           endpoint.write(
-              response.buffer,
-              response.buffer.lengthInBytes,
-              response.handles);
+              response.buffer, response.buffer.lengthInBytes, response.handles);
           if (!endpoint.status.isOk) {
             throw 'message pipe write failed: ${endpoint.status}';
           }
@@ -52,6 +52,8 @@ abstract class Stub extends core.MojoEventStreamListener {
             // a response. It is safe to close.
             super.close();
             _isClosing = false;
+            _closeCompleter.complete(null);
+            _closeCompleter = null;
           }
         }
       });
@@ -60,6 +62,8 @@ abstract class Stub extends core.MojoEventStreamListener {
       // there are no outstanding response futures. Do the close now.
       super.close();
       _isClosing = false;
+      _closeCompleter.complete(null);
+      _closeCompleter = null;
     }
   }
 
@@ -70,7 +74,7 @@ abstract class Stub extends core.MojoEventStreamListener {
   // 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}) {
+  Future close({bool nodefer: false}) {
     if (isOpen &&
         !nodefer &&
         (isInHandler || (_outstandingResponseFutures > 0))) {
@@ -79,8 +83,10 @@ abstract class Stub extends core.MojoEventStreamListener {
       // response futures. Defer the actual close until all response futures
       // have been resolved.
       _isClosing = true;
+      _closeCompleter = new Completer();
+      return _closeCompleter.future;
     } else {
-      super.close();
+      return super.close();
     }
   }
 
@@ -93,4 +99,9 @@ abstract class Stub extends core.MojoEventStreamListener {
     var header = new MessageHeader.withRequestId(name, flags, id);
     return response.serializeWithHeader(header);
   }
+
+  String toString() {
+    var superString = super.toString();
+    return "Stub(${superString})";
+  }
 }