Remove //device/devices_app.

device/usb/usb.gyp

Index: device/usb/usb.gyp
diff --git a/device/usb/usb.gyp b/device/usb/usb.gyp
index a68b187b4517cfcb6ef21ef85456b10ffe95189f..7f5e6766bafe55cde602e5b76fba22783a31441d 100644
--- a/device/usb/usb.gyp
+++ b/device/usb/usb.gyp
@@ -22,6 +22,12 @@
       'sources': [
         'android/usb_jni_registrar.cc',
         'android/usb_jni_registrar.h',
+        'mojo/device_impl.cc',
+        'mojo/device_impl.h',
+        'mojo/device_manager_impl.cc',
+        'mojo/device_manager_impl.h',
+        'mojo/type_converters.cc',
+        'mojo/type_converters.h',
         'usb_configuration_android.cc',
         'usb_configuration_android.h',
         'usb_context.cc',
@@ -116,6 +122,18 @@
       ]
     },
     {
+      'target_name': 'device_usb_mojo_bindings',
+      'type': 'static_library',
+      'sources': [
+        'public/interfaces/device.mojom',
+        'public/interfaces/device_manager.mojom',
+        'public/interfaces/permission_provider.mojom',
+      ],
+      'includes': [
+        '../../mojo/mojom_bindings_generator.gypi',
+      ],
+    },
+    {
       'target_name': 'device_usb_mocks',
       'type': 'static_library',
       'include_dirs': [