Move testonly support for UI input events to libcef_test_support

patch/patch.cfg

@@ -566,11 +566,6 @@ patches = [
     # https://bugs.chromium.org/p/chromium/issues/detail?id=1123214
     'name': 'linux_atk_1123214',
   },
-  {
-    # Linux: Make the //ui/ozone:generate_test_support_constructor_list target
-    # visible to CEF.
-    'name': 'linux_ui_ozone',
-  },
   {
     # Windows: Fix crash when |sandbox_info| parameter is nullptr.
     # https://bitbucket.org/chromiumembedded/cef/issues/3210

patch/patches/linux_ui_ozone.patch

@@ -1,13 +0,0 @@
-diff --git ui/ozone/BUILD.gn ui/ozone/BUILD.gn
-index fa2c17f4e209f..91bed0fb1ad66 100644
---- ui/ozone/BUILD.gn
-+++ ui/ozone/BUILD.gn
-@@ -398,6 +398,8 @@ action("generate_test_support_constructor_list") {
-   ]
- 
-   deps = [ ":generate_ozone_platform_list" ]
-+
-+  visibility += [ "//cef:*" ]
- }
- 
- test("ozone_unittests") {