Dart: Removes all but native calls and the handle watcher from the snapshot.

mojo/public/dart/src/handle.dart

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 part of core;
 
-class _MojoHandleNatives {
-  static int register(MojoEventStream eventStream) native "MojoHandle_Register";
-  static int close(int handle) native "MojoHandle_Close";
-  static List wait(
-      int handle, int signals, int deadline) native "MojoHandle_Wait";
-  static List waitMany(List<int> handles, List<int> signals,
-      int deadline) native "MojoHandle_WaitMany";
-}
-
 class _HandleCreationRecord {
   final MojoHandle handle;
   final StackTrace stack;
   _HandleCreationRecord(this.handle, this.stack);
 }
 
 class MojoHandle {
   static const int INVALID = 0;
   static const int DEADLINE_INDEFINITE = -1;
 
   int _h;
   int get h => _h;
 
   MojoHandle(this._h) {
     assert(_addUnclosedHandle(this));
   }
 
   MojoHandle._internal(this._h);
 
   MojoHandle.invalid() : this._internal(INVALID);
 
   MojoResult close() {
     assert(_removeUnclosedHandle(this));
-    int result = _MojoHandleNatives.close(_h);
+    int result = MojoHandleNatives.close(_h);
     _h = INVALID;
     return new MojoResult(result);
   }
 
   MojoHandle pass() {
     assert(_removeUnclosedHandle(this));
     return this;
   }
 
   MojoWaitResult wait(int signals, int deadline) {
-    List result = _MojoHandleNatives.wait(h, signals, deadline);
-    return new MojoWaitResult(new MojoResult(result[0]), result[1]);
+    List result = MojoHandleNatives.wait(h, signals, deadline);
+    var state = result[1] != null
+        ? new MojoHandleSignalsState(result[1][0], result[1][1])
+        : null;
+    return new MojoWaitResult(new MojoResult(result[0]), state);
   }
 
   bool _ready(MojoHandleSignals signal) {
     MojoWaitResult mwr = wait(signal.value, 0);
     switch (mwr.result) {
       case MojoResult.OK:
         return true;
       case MojoResult.DEADLINE_EXCEEDED:
       case MojoResult.CANCELLED:
       case MojoResult.INVALID_ARGUMENT:
@@ skipping 20 matching lines @@
     var mwr = wait(MojoHandleSignals.kAll, 0);
     return "MojoHandle(h: $h, status: $mwr)";
   }
 
   bool operator ==(MojoHandle other) {
     return _h == other._h;
   }
 
   static MojoWaitManyResult waitMany(
       List<int> handles, List<int> signals, int deadline) {
-    List result = _MojoHandleNatives.waitMany(handles, signals, deadline);
-    return new MojoWaitManyResult(
-        new MojoResult(result[0]), result[1], result[2]);
+    List result = MojoHandleNatives.waitMany(handles, signals, deadline);
+    List states = result[2] != null
+        ? result[2].map((l) => new MojoHandleSignalsState(l[0], l[1])).toList()
+        : null;
+    return new MojoWaitManyResult(new MojoResult(result[0]), result[1], states);
   }
 
   static MojoResult register(MojoEventStream eventStream) {
-    return new MojoResult(_MojoHandleNatives.register(eventStream));
+    return new MojoResult(
+        MojoHandleNatives.register(eventStream, eventStream._handle.h));
   }
 
   static HashMap<int, _HandleCreationRecord> _unclosedHandles = new HashMap();
 
   // _addUnclosedHandle(), _removeUnclosedHandle(), and dumpLeakedHandles()
   // should only be used inside of assert() statements.
   static bool _addUnclosedHandle(MojoHandle handle) {
     var stack;
     try {
       assert(false);
@@ skipping 17 matching lines @@
       var handleCreation = MojoHandle._unclosedHandles[handle];
       if (handleCreation != null) {
         print("HANDLE LEAK: handle: $handle, created at:");
         print("${handleCreation.stack}");
         noleaks = false;
       }
     }
     return noleaks;
   }
 }