Adds Mojo IDL.

third_party/WebKit/Source/core/mojo/MojoHandle.h

Index: third_party/WebKit/Source/core/mojo/MojoHandle.h
diff --git a/third_party/WebKit/Source/core/mojo/MojoHandle.h b/third_party/WebKit/Source/core/mojo/MojoHandle.h
new file mode 100644
index 0000000000000000000000000000000000000000..4e488c341cedf16bdaf3f18c98a358415a81ed14
--- /dev/null
+++ b/third_party/WebKit/Source/core/mojo/MojoHandle.h
@@ -0,0 +1,27 @@
+// Copyright 2016 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.
+
+#ifndef MojoHandle_h
+#define MojoHandle_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "core/mojo/MojoScopedHandle.h"
+
+namespace blink {
+
+class MojoHandle final : public GarbageCollectedFinalized<MojoHandle>,
+                         public MojoScopedHandle,
+                         public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  explicit MojoHandle(::MojoHandle);
+  virtual ~MojoHandle();
+
+  DEFINE_INLINE_TRACE() {}
+};
+
+}  // namespace blink
+
+#endif  // MojoHandle_h