Revert of Mojo multiple command buffer support and sample

mojo/examples/surfaces_app/embedder.h

 // 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.
 
 #ifndef MOJO_EXAMPLES_SURFACES_APP_EMBEDDER_H_
 #define MOJO_EXAMPLES_SURFACES_APP_EMBEDDER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/surfaces/surface_id.h"
 #include "mojo/services/public/interfaces/surfaces/surfaces.mojom.h"
@@ skipping 13 matching lines @@
 class Embedder {
  public:
   explicit Embedder(Surface* surface);
   ~Embedder();
 
   void SetSurfaceId(cc::SurfaceId id) { id_ = id; }
   void ProduceFrame(cc::SurfaceId child_one,
                     cc::SurfaceId child_two,
                     const gfx::Size& child_size,
                     const gfx::Size& size,
-                    int offset);
+                    double rotation_degrees);
 
  private:
   cc::SurfaceId id_;
   Surface* surface_;
 
   DISALLOW_COPY_AND_ASSIGN(Embedder);
 };
 
 }  // namespace examples
 }  // namespace mojo
 
 #endif  // MOJO_EXAMPLES_SURFACES_APP_EMBEDDER_H_