Restore aura support from Mojo repo.

mandoline/ui/aura/surface_binding.h

Index: mandoline/ui/aura/surface_binding.h
diff --git a/mandoline/ui/aura/surface_binding.h b/mandoline/ui/aura/surface_binding.h
new file mode 100644
index 0000000000000000000000000000000000000000..3a1eeaa03e4ac210a9e9281d3fe67435d95b7a7d
--- /dev/null
+++ b/mandoline/ui/aura/surface_binding.h
@@ -0,0 +1,48 @@
+// Copyright 2015 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 MANDOLINE_UI_AURA_SURFACE_BINDING_H_
+#define MANDOLINE_UI_AURA_SURFACE_BINDING_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace cc {
+class OutputSurface;
+}
+
+namespace mojo {
+class Shell;
+class View;
+}
+
+namespace mandoline {
+
+// SurfaceBinding is responsible for managing the connections necessary to
+// bind a View to the surfaces service.
+// Internally SurfaceBinding manages one connection (and related structures) per
+// ViewManager. That is, all Views from a particular ViewManager share the same
+// connection.
+class SurfaceBinding {
+ public:
+  SurfaceBinding(mojo::Shell* shell, mojo::View* view);
+  ~SurfaceBinding();
+
+  // Creates an OutputSurface that renders to the View supplied to the
+  // constructor.
+  scoped_ptr<cc::OutputSurface> CreateOutputSurface();
+
+ private:
+  class PerViewManagerState;
+
+  mojo::Shell* shell_;
+  mojo::View* view_;
+  scoped_refptr<PerViewManagerState> state_;
+
+  DISALLOW_COPY_AND_ASSIGN(SurfaceBinding);
+};
+
+}  // namespace mandoline
+
+#endif  // MANDOLINE_UI_AURA_SURFACE_BINDING_H_