Update mojo sdk to rev f6c8ec07c01deebc13178d516225fd12695c3dc2

mojo/public/dart/src/buffer.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 _MojoSharedBufferNatives {
   static List Create(int num_bytes, int flags)
       native "MojoSharedBuffer_Create";
 
   static List Duplicate(int buffer_handle, int flags)
       native "MojoSharedBuffer_Duplicate";
 
-  static List Map(int buffer_handle, int offset, int num_bytes, int flags)
+  static List Map(MojoSharedBuffer buffer,
+                  int buffer_handle,
+                  int offset,
+                  int num_bytes,
+                  int flags)
       native "MojoSharedBuffer_Map";
 
   static int Unmap(ByteData buffer)
       native "MojoSharedBuffer_Unmap";
 }
 
 
 class MojoSharedBuffer {
   static const int CREATE_FLAG_NONE = 0;
   static const int DUPLICATE_FLAG_NONE = 0;
@@ skipping 34 matching lines @@
     }
     assert((result is List) && (result.length == 2));
     var r = new MojoResult(result[0]);
     if(!r.isOk) {
       return null;
     }
 
     MojoSharedBuffer dupe = new MojoSharedBuffer._();
     dupe.status = r;
     dupe.handle = new RawMojoHandle(result[1]);
-    dupe.mapping = msb.mapping;
+    dupe.mapping = null;  // The buffer is not mapped in the duplicate.
     return dupe;
   }
 
   MojoResult close() {
     if (handle == null) {
       status = MojoResult.INVALID_ARGUMENT;
       return status;
     }
     MojoResult r = handle.close();
     status = r;
     mapping = null;
     return status;
   }
 
   MojoResult map(int offset, int num_bytes, [int flags = 0]) {
     if (handle == null) {
       status = MojoResult.INVALID_ARGUMENT;
       return status;
     }
     List result = _MojoSharedBufferNatives.Map(
-        handle.h, offset, num_bytes, flags);
+        this, handle.h, offset, num_bytes, flags);
     if (result == null) {
       status = MojoResult.INVALID_ARGUMENT;
       return status;
     }
     assert((result is List) && (result.length == 2));
     status = new MojoResult(result[0]);
     mapping = result[1];
     return status;
   }
 
   MojoResult unmap() {
     int r = _MojoSharedBufferNatives.Unmap(mapping);
     status = new MojoResult(r);
     mapping = null;
     return status;
   }
 }