Implements JS bindings for mojo data pipe.

third_party/WebKit/Source/core/mojo/MojoReadDataOptions.idl

Index: third_party/WebKit/Source/core/mojo/MojoReadDataOptions.idl
diff --git a/third_party/WebKit/Source/core/mojo/MojoReadDataOptions.idl b/third_party/WebKit/Source/core/mojo/MojoReadDataOptions.idl
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index 0000000000000000000000000000000000000000..b0f027d50ff731b9c8947e840ba654313b919e9d
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+++ b/third_party/WebKit/Source/core/mojo/MojoReadDataOptions.idl
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+// Copyright 2017 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.
+
+dictionary MojoReadDataOptions {
+    boolean allOrNone = false;
+    boolean peek = false;
+};