Partial revert of https://codereview.chromium.org/1911973002/

ui/native_theme/BUILD.gn

Index: ui/native_theme/BUILD.gn
diff --git a/ui/native_theme/BUILD.gn b/ui/native_theme/BUILD.gn
index 6314939bcdf2eace3bd8b089de5feef45dfd40fa..3e71fba9df480eb3ce90ed52c6b721d18efcd02c 100644
--- a/ui/native_theme/BUILD.gn
+++ b/ui/native_theme/BUILD.gn
@@ -15,16 +15,12 @@ component("native_theme") {
     "native_theme_android.h",
     "native_theme_base.cc",
     "native_theme_base.h",
-    "native_theme_dark_win.cc",
-    "native_theme_dark_win.h",
     "native_theme_mac.h",
     "native_theme_mac.mm",
     "native_theme_observer.cc",
     "native_theme_observer.h",
     "native_theme_switches.cc",
     "native_theme_switches.h",
-    "native_theme_win.cc",
-    "native_theme_win.h",
   ]
 
   if (use_aura) {
@@ -34,13 +30,6 @@ component("native_theme") {
       "native_theme_dark_aura.cc",
       "native_theme_dark_aura.h",
     ]
-
-    if (is_win) {
-      sources += [
-        "native_theme_aurawin.cc",
-        "native_theme_aurawin.h",
-      ]
-    }
   }
 
   defines = [ "NATIVE_THEME_IMPLEMENTATION" ]
@@ -64,6 +53,26 @@ component("native_theme") {
   }
 }
 
+component("native_theme_browser") {
+  defines = [ "NATIVE_THEME_IMPLEMENTATION" ]
+
+  # These files cannot work in the renderer on Windows.
+  sources = [
+    "native_theme_dark_win.cc",
+    "native_theme_dark_win.h",
+    "native_theme_win.cc",
+    "native_theme_win.h",
+  ]
+
+  deps = [
+    ":native_theme",
+    "//base",
+    "//ui/base",
+    "//ui/display",
+    "//ui/gfx",
+  ]
+}
+
 test("native_theme_unittests") {
   sources = []