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..695a09fd3cb82723e78cc4cb12f604e0949b84c6
--- /dev/null
+++ b/third_party/WebKit/Source/core/mojo/MojoHandle.h
@@ -0,0 +1,36 @@
+// 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 "mojo/public/cpp/system/handle.h"
+
+namespace blink {
+
+class MojoHandle final : public GarbageCollectedFinalized<MojoHandle>,
+                         public ScriptWrappable {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  CORE_EXPORT static MojoHandle* create(mojo::ScopedHandle);
+  virtual ~MojoHandle();
+
+  ::MojoHandle value() const { return m_handle.get().value(); }
+  mojo::Handle get() const { return m_handle.get(); }
+  mojo::Handle release() { return m_handle.release(); }
+  MojoResult close() { return mojo::CloseRaw(m_handle.release()); }
+
+  DEFINE_INLINE_TRACE() {}
+
+ private:
+  explicit MojoHandle(mojo::ScopedHandle);
+
+  mojo::ScopedHandle m_handle;
+};
+
+}  // namespace blink
+
+#endif  // MojoHandle_h