Generate all extension schema namespaces as "api" and instead vary the generated bundle names.

extensions/browser/api/cast_channel/logger_util.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 EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_
 
 #include "extensions/common/api/cast_channel.h"
 #include "extensions/common/api/cast_channel/logging.pb.h"
 
 namespace extensions {
-namespace core_api {
+namespace api {
 namespace cast_channel {
 // Converts an IDL "ChannelError" to a proto enum "ErrorState".
 proto::ErrorState ErrorStateToProto(ChannelError state);
 
 // Converts an IDL "ReadyState" to a proto enum "ReadyState".
 proto::ReadyState ReadyStateToProto(ReadyState state);
 
 // Holds the most recent errors encountered by a CastSocket.
 struct LastErrors {
  public:
@@ skipping 11 matching lines @@
 
   // The most recent NSS error logged for the socket.
   int nss_error_code;
 };
 
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_LOGGER_UTIL_H_