Generate license file separately

android_webview/android_webview.gyp

 # Copyright 2009 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.
 {
   'variables': {
     'chromium_code': 1,
     'system_webview_package_name%': 'com.android.webview',
   },
   'targets': [
     {
@@ skipping 104 matching lines @@
           'outputs': [
             '<(PRODUCT_DIR)/natives_blob_<(arch_suffix).bin',
           ],
           'action': [
             'python',
             '<(DEPTH)/build/cp.py',
             '<@(_inputs)',
             '<@(_outputs)',
           ],
         },
+        {
+          'action_name': 'generate_webview_license_notice',
+          'inputs': [
+            '<!@(python <(DEPTH)/android_webview/tools/webview_licenses.py notice_deps)',
+            '<(DEPTH)/android_webview/tools/licenses_notice.tmpl',
+            '<(DEPTH)/android_webview/tools/webview_licenses.py',
+          ],
+          'outputs': [
+             '<(webview_licenses_path)',
+          ],
+          'action': [
+            'python',
+              '<(DEPTH)/android_webview/tools/webview_licenses.py',
+              'notice',
+              '<(webview_licenses_path)',
+          ],
+          'message': 'Generating WebView license notice',
+        },
       ],
     },
     {
       'target_name': 'android_webview_locale_paks',
       'type': 'none',
       'variables': {
         'locale_pak_files': [
           '<@(webview_locales_input_common_paks)',
           '<@(webview_locales_input_individual_paks)',
         ],
@@ skipping 321 matching lines @@
         'android_manifest_template_vars': ['package=<(system_webview_package_name)'],
       },
       'includes': [ 'apk/system_webview_apk_common.gypi' ],
     },
   ],
   'includes': [
     'android_webview_tests.gypi',
     'apk/system_webview_paks.gypi',
   ],
 }