Lacros: fix build config.

crrev.com/c/2560279 had a mistake of updating the configuration.
"!is_linux" (not is_linux) needed to be expanded to
"!is_linux && !is_chromeos_lacros".

This caused link-time error, when thinlto is enabled.

Bug: 1157567, 1052397
Test: Built locally.
Change-Id: I0d7547e326706b6ceb734f98c05d7a96fdd4ce5a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2584633
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Auto-Submit: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836621}

chrome/browser/ui/BUILD.gn

@@ -3337,7 +3337,7 @@ static_library("ui") {
       ]
     }
     if (use_ozone) {
-      if (!is_linux || is_chromeos_lacros) {
+      if (!is_linux && !is_chromeos_lacros) {
         sources += [
           "views/frame/browser_desktop_window_tree_host_platform.cc",
           "views/frame/browser_desktop_window_tree_host_platform.h",