Add webusb notification UI code

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 987 matching lines @@
       'browser/certificate_viewer.cc',
       'browser/certificate_viewer.h',
       'browser/chrome_browser_field_trials_desktop.cc',
       'browser/chrome_browser_field_trials_desktop.h',
       'browser/chrome_browser_main_posix.cc',
       'browser/chrome_browser_main_posix.h',
       'browser/chrome_device_client.cc',
       'browser/chrome_device_client.h',
       'browser/chrome_process_singleton.cc',
       'browser/chrome_process_singleton.h',
+      'browser/chrome_webusb_browser_client.cc',
+      'browser/chrome_webusb_browser_client.h',
       'browser/component_updater/widevine_cdm_component_installer.cc',
       'browser/component_updater/widevine_cdm_component_installer.h',
       'browser/custom_home_pages_table_model.cc',
       'browser/custom_home_pages_table_model.h',
       'browser/diagnostics/diagnostics_controller.cc',
       'browser/diagnostics/diagnostics_controller.h',
       'browser/diagnostics/diagnostics_metrics.cc',
       'browser/diagnostics/diagnostics_metrics.h',
       'browser/diagnostics/diagnostics_model.cc',
       'browser/diagnostics/diagnostics_model.h',
@@ skipping 2604 matching lines @@
         }],
         ['OS!="android" and OS!="ios" and chromeos==0', {
           'sources': [ '<@(chrome_browser_desktop_sources)' ],
         }],
         ['OS=="android" or OS=="ios"', {
           'sources': [ '<@(chrome_browser_mobile_sources)' ],
         }, {  # OS!="android" and OS!="ios"
           'sources': [ '<@(chrome_browser_non_mobile_sources)' ],
           'dependencies': [
             '../components/components.gyp:feedback_component',
+            '../components/components.gyp:webusb',
             '../device/core/core.gyp:device_core',
             '../device/devices_app/devices_app.gyp:devices_app_public_cpp',
             '../device/devices_app/devices_app.gyp:devices_app_public_cpp_factory',
             '../device/usb/usb.gyp:device_usb',
             '../net/net.gyp:net_browser_services',
           ]
         }],
         ['OS=="android"', {
           'dependencies': [
             '../build/android/ndk.gyp:cpu_features',
@@ skipping 452 matching lines @@
             '../components/components.gyp:omnibox_browser',
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
           ],
         },
       ],
     }],
   ],
 }