Generate the print messages in components/printing

chrome/common/all_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included file, hence no include guard.
 // Inclusion of all message files present in chrome. Keep this file
 // up-to-date when adding a new value to the IPCMessageStart enum in
 // ipc/ipc_message_start.h to ensure the corresponding message file is
 // included here. Message classes used exclusively outside of chrome
 // should not be listed here and instead get an exemption in
 // chrome/tools/ipclist/ipclist.cc.
 #if !defined(OS_ANDROID)
 #include "chrome/common/importer/profile_import_process_messages.h"
 #endif
 
 #include "chrome/common/common_message_generator.h"
 
+#if defined(ENABLE_PRINTING)
+#include "components/printing/common/print_messages.h"

[Bernhard Bauer, 2015/01/19 22:34:31]

I just realized... are you actually going to need these messages outside of
components/printing? Usually we abstract away all of the IPC into the component.
If you only need the messages in the component, we might get away without the
param_traits file?

[Vitaly Buka (NO REVIEWS), 2015/01/21 00:59:59]

Maybe in future. Now we have code in chrome/ that sends these messages.

On 2015/01/19 22:34:31, Bernhard Bauer wrote:

[Bernhard Bauer, 2015/01/21 10:13:57]

Is that code going to be componentized as well?

[Bernhard Bauer, 2015/01/21 18:57:29]

Could we add a TODO then to get rid of the traits file once we only use the
messages in one place?

[dgn, 2015/01/22 00:14:29]

Done.

+#endif
+
 #if !defined(DISABLE_NACL)
 #include "components/nacl/common/nacl_messages.h"
 #endif