Change mojo enums to be scoped enums in the generated C++ bindings.

components/filesystem/file_system_impl.cc

 // 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.
 
 #include "components/filesystem/file_system_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 72 matching lines @@
     path = base_profile_dir.Append(sanitized_origin);
 #endif
     if (!base::PathExists(path))
       base::CreateDirectory(path);
   }
 
   if (!path.empty()) {
     DirectoryImpl* dir_impl =
         new DirectoryImpl(std::move(directory), path, std::move(temp_dir));
     app_->RegisterDirectoryToClient(dir_impl, std::move(client));
-    callback.Run(FILE_ERROR_OK);
+    callback.Run(FileError::OK);
   } else {
-    callback.Run(FILE_ERROR_FAILED);
+    callback.Run(FileError::FAILED);
   }
 }
 
 base::FilePath FileSystemImpl::GetSystemProfileDir() const {
   base::FilePath path;
 
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (command_line->HasSwitch(kUserDataDir)) {
     path = command_line->GetSwitchValuePath(kUserDataDir);
   } else {
@@ skipping 47 matching lines @@
       encoded[1] += (encoded[1] >= 10) ? 'A' - 10 : '0';
       encoded[2] = ch % 16;
       encoded[2] += (encoded[2] >= 10) ? 'A' - 10 : '0';
       encoded_len = 3;
     }
     sanitized_origin->append(encoded, encoded_len);
   }
 }
 
 }  // namespace filesystem