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

extensions/browser/api/cast_channel/cast_socket.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_CAST_SOCKET_H_
 #define EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_SOCKET_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 18 matching lines @@
 namespace net {
 class AddressList;
 class CertVerifier;
 class SSLClientSocket;
 class StreamSocket;
 class TCPClientSocket;
 class TransportSecurityState;
 }
 
 namespace extensions {
-namespace core_api {
+namespace api {
 namespace cast_channel {
 class CastMessage;
 class Logger;
 struct LastErrors;
 class MessageFramer;
 
 // Cast device capabilities.
 enum CastDeviceCapability {
   NONE = 0,
   VIDEO_OUT = 1 << 0,
@@ skipping 308 matching lines @@
   // Caller's message read and error handling delegate.
   scoped_ptr<CastTransport::Delegate> delegate_;
 
   // Raw pointer to the auth handshake delegate. Used to get detailed error
   // information.
   AuthTransportDelegate* auth_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(CastSocketImpl);
 };
 }  // namespace cast_channel
-}  // namespace core_api
+}  // namespace api
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_SOCKET_H_