ozone: Turn on chromium-style warnings for ChromeOS ozone

BUG=417463
TEST=build with chromeos=1 use_ozone=1

Review URL: https://codereview.chromium.org/884233002

Cr-Commit-Position: refs/heads/master@{#313613}

build/common.gypi

@@ -2143,7 +2143,7 @@
         'conditions': [
           # TODO(dcheng): https://crbug.com/417463 -- work to enable this flag
           # on all platforms is currently underway.
-          ['(OS=="linux" and (chromeos==0 or use_ozone==0)) or OS=="mac" or OS=="ios"', {
+          ['OS=="linux" or OS=="mac" or OS=="ios"', {
             'clang_chrome_plugins_flags': [
               '-Xclang',
               '-plugin-arg-find-bad-constructs',