Make the ChromeOS GN debug component build work

chrome/browser/ui/BUILD.gn

Index: chrome/browser/ui/BUILD.gn
diff --git a/chrome/browser/ui/BUILD.gn b/chrome/browser/ui/BUILD.gn
index 73c67669905e7d06fac4aaf49666bfe8965d7e0d..3151b879cd625c2b889f1d356ccd5d5bfec19537 100644
--- a/chrome/browser/ui/BUILD.gn
+++ b/chrome/browser/ui/BUILD.gn
@@ -211,6 +211,16 @@ source_set("ui") {
                       ".",
                       "//chrome")
       deps += [ "//extensions/components/native_app_window" ]
+      if (is_chromeos) {
+        # TODO(GYP): crbug.com/481629. These files should probably not be
+        # a part of ui_views_non_mac_sources at all.
+        sources -= [
+          "views/frame/opaque_browser_frame_view.cc",
+          "views/frame/opaque_browser_frame_view.h",
+          "views/frame/opaque_browser_frame_view_linux.cc",
+          "views/frame/opaque_browser_frame_view_linux.h",
+        ]
+      }
     }
     if (use_ash) {
       sources += rebase_path(gypi_values.chrome_browser_ui_ash_views_sources,