Fix condition to include "ui/keyboard/keyboard_resource_util.h"

//ui/keyboard is available only on Chrome OS.
The code using the module is guarded by the correct conditions,
so it has not caused any build error so far.

Bug: 847109
Test: trybot
Change-Id: I551d78e02d0b17b6d7cf6075e87189173d79844f
Reviewed-on: https://chromium-review.googlesource.com/1098575Reviewed-by: Ben Wells <benwells@chromium.org>
Commit-Queue: Yuichiro Hanada <yhanada@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567575}

chrome/common/extensions/chrome_manifest_url_handlers.cc

@@ -24,8 +24,8 @@
 #include "extensions/common/manifest_url_handlers.h"
 #include "extensions/common/permissions/api_permission.h"
 
-#if defined(USE_AURA)
-#include "ui/keyboard/keyboard_resource_util.h"  // nogncheck
+#if defined(OS_CHROMEOS)
+#include "ui/keyboard/keyboard_resource_util.h"
 #endif
 
 namespace extensions {