Build chrome.input.ime.* API in GN mode.

chrome/common/extensions/api/schemas.gypi

 # 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.
 
 {
   'sources': [
     '<@(schema_files)',
   ],
   'variables': {
     'main_schema_files': [
@@ skipping 128 matching lines @@
       'mdns.idl',
     ],
 
     'webrtc_schema_files': [
       'cast_streaming_receiver_session.idl',
       'cast_streaming_rtp_stream.idl',
       'cast_streaming_session.idl',
       'cast_streaming_udp_transport.idl',
     ],
 
+    # Input IME schema.
+    'input_ime_schema_file': [
+      'input_ime.json',
+    ],
+
     'non_compiled_schema_files': [
       '<@(main_non_compiled_schema_files)',
     ],
     'schema_dependencies': [
       '<(DEPTH)/extensions/common/api/api.gyp:extensions_api',
     ],
     'schema_files': [
       '<@(main_schema_files)',
     ],
     'schema_include_rules': [
       '<@(main_schema_include_rules)',
     ],
 
     'chromium_code': 1,
     # Disable schema compiler to generate model extension API code.
     # Only register the extension functions in extension system.
     'conditions': [
       ['chromeos==1', {
         'schema_files': [
           '<@(chromeos_schema_files)',
         ],
         'non_compiled_schema_files': [
           '<@(chromeos_non_compiled_schema_files)',
         ],
-      }],
-      ['OS=="linux" or OS=="win"', {
-        'schema_files': [
-          'input_ime.json',
-        ],
+      }, { # chromeos==0
+        'conditions': [
+          ['OS=="linux" or OS=="win"', {
+            'schema_files': [
+              '<@(input_ime_schema_file)',
+            ],
+          }],
+        ],
       }],
       ['enable_service_discovery==1', {
         'schema_files': [
           '<@(service_discovery_schema_files)',
         ],
       }],
       ['enable_webrtc==1', {
         'schema_files': [
           '<@(webrtc_schema_files)',
         ],
       }],
     ],
     'cc_dir': 'chrome/common/extensions/api',
     'root_namespace': 'extensions::api::%(namespace)s',
     'bundle_name': 'Chrome',
     'impl_dir_': 'chrome/browser/extensions/api',
   },
 }