Decompose //extensions/browser/BUILD.gn

extensions/browser/api/usb/BUILD.gn

Index: extensions/browser/api/usb/BUILD.gn
diff --git a/ui/gfx/range/BUILD.gn b/extensions/browser/api/usb/BUILD.gn
similarity index 52%
copy from ui/gfx/range/BUILD.gn
copy to extensions/browser/api/usb/BUILD.gn
index 2b9036f388df22c9c4ce95cb85ce5f82292b21d3..ceb509451306afbee2c231979451a4018a419078 100644
--- a/ui/gfx/range/BUILD.gn
+++ b/extensions/browser/api/usb/BUILD.gn
@@ -2,15 +2,16 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-component("range") {
+source_set("usb") {
   sources = [
-    "gfx_range_export.h",
-    "range.cc",
-    "range.h",
-    "range_f.cc",
-    "range_f.h",
-    "range_mac.mm",
-    "range_win.cc",
+    "usb_api.cc",
+    "usb_api.h",
+    "usb_device_resource.cc",
+    "usb_device_resource.h",
+    "usb_event_router.cc",
+    "usb_event_router.h",
+    "usb_guid_map.cc",
+    "usb_guid_map.h",
   ]
 
   configs += [
@@ -18,10 +19,9 @@ component("range") {
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 
-  defines = [ "GFX_RANGE_IMPLEMENTATION" ]
-
   deps = [
-    "//base",
-    "//ui/gfx:gfx_export",
+    "//content/public/browser",
+    "//content/public/common",
+    "//extensions/common/api",
   ]
 }