Mojo: Move mojo/system/embedder to mojo/embedder.

mojo/common/test/test_utils_win.cc

 // 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.
 
 #include "mojo/common/test/test_utils.h"
 
 #include <windows.h>
 
-#include "mojo/system/embedder/platform_handle.h"
+#include "mojo/embedder/platform_handle.h"
 
 namespace mojo {
 namespace test {
 
 bool BlockingWrite(const embedder::PlatformHandle& handle,
                    const void* buffer,
                    size_t bytes_to_write,
                    size_t* bytes_written) {
   OVERLAPPED overlapped = { 0 };
   DWORD bytes_written_dword = 0;
@@ skipping 51 matching lines @@
       return true;
     }
   }
 
   *bytes_read = bytes_read_dword;
   return true;
 }
 
 }  // namespace test
 }  // namespace mojo