Remove BrowserThread dependency from usb_service.

chrome/chrome_browser.gypi

Index: chrome/chrome_browser.gypi
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index b733bb7ffa4f47d29926431b97f705f6116ff84c..d1a590b22177b63c7e2e22fb2c4022ef49fe64b2 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -2279,6 +2279,8 @@
     'chrome_browser_non_mobile_sources': [
       'browser/chrome_browser_field_trials_desktop.cc',
       'browser/chrome_browser_field_trials_desktop.h',
+      'browser/chrome_device_client.cc',
+      'browser/chrome_device_client.h',
     ],
     'chrome_browser_supervised_user_sources': [
       'browser/supervised_user/custodian_profile_downloader_service.cc',
@@ -2925,7 +2927,6 @@
             '../components/components.gyp:storage_monitor',
             '../components/components.gyp:translate_content_browser',
             '../components/components.gyp:url_matcher',
-            '../components/components.gyp:usb_service',
             '../components/components.gyp:visitedlink_browser',
             '../components/components.gyp:visitedlink_common',
             '../components/components.gyp:web_modal',
@@ -3250,6 +3251,10 @@
           'sources': [ '<@(chrome_browser_mobile_sources)' ],
         }, {  # OS!="android" and OS!="ios"
           'sources': [ '<@(chrome_browser_non_mobile_sources)' ],
+          'dependencies': [
+            '../components/components.gyp:usb_service',
+            '../device/core/core.gyp:device_core',
+          ]
         }],
         ['OS=="android"', {
           'dependencies': [
@@ -3262,7 +3267,6 @@
           'dependencies!': [
             '../components/components.gyp:feedback_component',
             '../components/components.gyp:storage_monitor',
-            '../components/components.gyp:usb_service',
             '../components/components.gyp:web_modal',
             '../third_party/libaddressinput/libaddressinput.gyp:libaddressinput',
           ],