Add two libcros interfaces for handwriting: SendHandwritingStrokes and CancelHandwriting.

SConstruct.chromiumos

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import os
 import re
 import sys
 
 def GlibMarshalEmitter(target, source, env):
   """ Inputs:
@@ skipping 120 matching lines @@
                      'input_methods/whitelist.txt'
 
 env.IBusEngines('ibus_input_methods.h',
                 [ime_whitelist_file, # The first argument must be whitelist.
                  ibus_component_dir + 'hangul.xml',
                  ibus_component_dir + 'm17n.xml',
                  ibus_component_dir + 'mozc.xml',
                  ibus_component_dir + 'mozc-chewing.xml',
                  ibus_component_dir + 'pinyin.xml',
                  ibus_component_dir + 'xkb-layouts.xml'])
+# TODO(yusukes): Add zinnia.xml:
+#                ibus_component_dir + 'zinnia.xml'
 
 env.InputMethodWhitelist('chromeos_input_method_whitelist.h',
                          ime_whitelist_file)
 
 env.KeyboardOverlayMap('chromeos_keyboard_overlay_map.h',
                         ime_whitelist_file)
 
 env.DBusServer('bindings_server.h',
                ['libcros_service.xml'])
 env.DBusClient('bindings_client.h',
@@ skipping 61 matching lines @@
   env_libcros_service_test.Program(
       'libcros_service_tester',
       ['libcros_service_tester.cc',
        'marshal.glibmarshal.c']),
 ]
 libcros_service_test_alias = \
     Alias('libcros_service_test', libcros_service_tests)
 AlwaysBuild(libcros_service_test_alias)
 
 Alias('crosapi', base_env.StaticLibrary('crosapi', Load), CCFLAGS='-ggdb')