[Chromoting] Break up the webapp's init function into smaller chunks.

remoting/remoting_webapp_files.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.
 
 {
   'variables': {
     'remoting_webapp_info_files': [
       'resources/chromoting16.webp',
       'resources/chromoting48.webp',
       'resources/chromoting128.webp',
@@ skipping 16 matching lines @@
       'webapp/crd/js/cs_oauth2_trampoline.js',  # Google account
     ],
     # Auth (client to host) JavaScript files.
     'remoting_webapp_js_auth_client2host_files': [
       'webapp/crd/js/third_party_host_permissions.js',
       'webapp/crd/js/third_party_token_fetcher.js',
     ],
     # Auth (Google account) JavaScript files.
     'remoting_webapp_js_auth_google_files': [
       'webapp/base/js/auth_dialog.js',
+      'webapp/base/js/auth_init.js',
       'webapp/crd/js/identity.js',
       'webapp/crd/js/oauth2.js',
       'webapp/crd/js/oauth2_api.js',
     ],
     # Client JavaScript files.
     'remoting_webapp_js_client_files': [
       'webapp/crd/js/client_plugin.js',
       'webapp/crd/js/client_plugin_impl.js',
       # TODO(garykac) For client_screen:
       # * Split out pin/access code stuff into separate file.
@@ skipping 100 matching lines @@
       'webapp/browser_test/mock_session_connector.js',
       'webapp/browser_test/mock_signal_strategy.js',
       'webapp/browser_test/scrollbar_browser_test.js',
       'webapp/browser_test/update_pin_browser_test.js',
     ],
     # These product files are excluded from our JavaScript unittest
     'remoting_webapp_unittest_exclude_files': [
       # background.js is where the onLoad handler is defined, which
       # makes it the entry point of the background page.
       'webapp/crd/js/background.js',
-      # event_handlers.js is where the onLoad handler is defined, which
-      # makes it the entry point of the webapp.
-      'webapp/crd/js/event_handlers.js',
     ],
     # The unit test cases for the webapp
     'remoting_webapp_unittest_js_files': [
       'webapp/js_proto/chrome_proto.js',
       'webapp/unittests/chrome_mocks.js',
       'webapp/unittests/base_unittest.js',
       'webapp/unittests/it2me_helpee_channel_unittest.js',
       'webapp/unittests/it2me_helper_channel_unittest.js',
       'webapp/unittests/it2me_service_unittest.js',
       'webapp/unittests/l10n_unittest.js',
       'webapp/unittests/menu_button_unittest.js',
       'webapp/unittests/xmpp_connection_unittest.js',
       'webapp/unittests/xmpp_login_handler_unittest.js',
       'webapp/unittests/xmpp_stream_parser_unittest.js',
     ],
     'remoting_webapp_unittest_additional_files': [
       'webapp/crd/html/menu_button.css',
     ],
     'remoting_webapp_unittest_template_main':
       'webapp/crd/html/template_unittest.html',
 
-    # The JavaScript files required by main.html.
-    'remoting_webapp_main_html_js_files': [
+    # The shared JavaScript files required by main.html.
+    'remoting_webapp_shared_main_html_js_files': [
       # Include the core files first as it is required by the other files.
       # Otherwise, Jscompile will complain.
       '<@(remoting_webapp_js_core_files)',
       '<@(remoting_webapp_js_auth_client2host_files)',
       '<@(remoting_webapp_js_auth_google_files)',
       '<@(remoting_webapp_js_client_files)',
       '<@(remoting_webapp_js_gnubby_auth_files)',
       '<@(remoting_webapp_js_cast_extension_files)',
       '<@(remoting_webapp_js_host_files)',
       '<@(remoting_webapp_js_logging_files)',
       '<@(remoting_webapp_js_ui_files)',
       '<@(remoting_webapp_js_ui_host_control_files)',
       '<@(remoting_webapp_js_ui_host_display_files)',
       '<@(remoting_webapp_js_signaling_files)',
       # Uncomment this line to include browser test files in the web app
       # to expedite debugging or local development.
       # '<@(remoting_webapp_js_browser_test_files)'
     ],
 
+    # The CRD-specific JavaScript files required by main.html.
+    'remoting_webapp_crd_main_html_js_files': [
+      'webapp/crd/js/crd_main.js',
+    ],
+
     # The JavaScript files that are used in the background page.
     'remoting_webapp_background_js_files': [
       'webapp/base/js/base.js',
       'webapp/base/js/message_window_helper.js',
       'webapp/base/js/message_window_manager.js',
       'webapp/crd/js/app_launcher.js',
       'webapp/crd/js/background.js',
       'webapp/crd/js/client_session.js',
       'webapp/crd/js/error.js',
       'webapp/crd/js/host_installer.js',
@@ skipping 10 matching lines @@
       'webapp/crd/js/xhr.js',
     ],
 
     # The JavaScript files required by wcs_sandbox.html.
     'remoting_webapp_wcs_sandbox_html_js_files': [
       '<@(remoting_webapp_js_wcs_sandbox_files)',
       'webapp/crd/js/error.js',
       'webapp/crd/js/plugin_settings.js',
     ],
 
-    # All the JavaScript files required by the webapp.
-    'remoting_webapp_all_js_files': [
+    # All the JavaScript files that are shared by webapps.
+    'remoting_webapp_shared_js_files': [
       # JS files for main.html.
-      '<@(remoting_webapp_main_html_js_files)',
+      '<@(remoting_webapp_shared_main_html_js_files)',
       '<@(remoting_webapp_background_js_files)',
       # JS files for message_window.html
       'webapp/base/js/message_window.js',
       # JS files for wcs_sandbox.html.
       # Use r_w_js_wcs_sandbox_files instead of r_w_wcs_sandbox_html_js_files
       # so that we don't double include error.js and plugin_settings.js.
       '<@(remoting_webapp_js_wcs_sandbox_files)',
       # JS files referenced in mainfest.json.
       '<@(remoting_webapp_js_auth_v1_files)',
     ],
 
+    # All the JavaScript files required by CRD.
+    'remoting_webapp_crd_js_files': [
+      '<@(remoting_webapp_shared_js_files)',
+      '<@(remoting_webapp_crd_main_html_js_files)',
+    ],
+
     'remoting_webapp_resource_files': [
       'resources/disclosure_arrow_down.webp',
       'resources/disclosure_arrow_right.webp',
       'resources/drag.webp',
       'resources/host_setup_instructions.webp',
       'resources/icon_close.webp',
       'resources/icon_cross.webp',
       'resources/icon_disconnect.webp',
       'resources/icon_fullscreen.webp',
       'resources/icon_help.webp',
@@ skipping 15 matching lines @@
       'webapp/base/resources/open_sans.css',
       'webapp/base/resources/open_sans.woff',
       'webapp/base/resources/spinner.gif',
       'webapp/crd/html/butter_bar.css',
       'webapp/crd/html/toolbar.css',
       'webapp/crd/html/menu_button.css',
       'webapp/crd/html/window_frame.css',
       'webapp/crd/resources/scale-to-fit.webp',
     ],
 
-    'remoting_webapp_files': [
+    'remoting_webapp_crd_files': [
       '<@(remoting_webapp_info_files)',
-      '<@(remoting_webapp_all_js_files)',
+      '<@(remoting_webapp_crd_js_files)',
       '<@(remoting_webapp_resource_files)',
     ],
 
     # These template files are used to construct the webapp html files.
     'remoting_webapp_template_main':
       'webapp/crd/html/template_main.html',
 
     'remoting_webapp_template_wcs_sandbox':
       'webapp/base/html/template_wcs_sandbox.html',
 
@@ skipping 20 matching lines @@
       'webapp/crd/html/dialog_token_refresh_failed.html',
       'webapp/crd/html/toolbar.html',
       'webapp/crd/html/ui_header.html',
       'webapp/crd/html/ui_it2me.html',
       'webapp/crd/html/ui_me2me.html',
       'webapp/crd/html/window_frame.html',
     ],
 
   },
 }