Propagate forced direction switches to the utility process

Views mojo apps (eg. Keyboard Shortcut Viewer) will use these switches.

Bug: 856341
Test: cros KSV (Ctrl-Alt-/) respects --force-[ui|text]-direction=rtl
Change-Id: I7f0a2577c6c8dab362125f385305521cd624705f
Reviewed-on: https://chromium-review.googlesource.com/1116003Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Michael Wasserman <msw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570871}

content/browser/utility_process_host.cc

@@ -11,6 +11,7 @@
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
+#include "base/i18n/base_i18n_switches.h"
 #include "base/sequenced_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/network_session_configurator/common/network_switches.h"
@@ -284,6 +285,8 @@ bool UtilityProcessHost::StartProcess() {
 #if defined(OS_MACOSX)
       service_manager::switches::kEnableSandboxLogging,
 #endif
+      switches::kForceTextDirection,
+      switches::kForceUIDirection,
       switches::kIgnoreCertificateErrors,
       switches::kOverrideUseSoftwareGLForTests,
       switches::kOverrideEnabledCdmInterfaceVersion,