Supply speech recognition sandbox from service_sandbox_type.h

This CL adds a header that was missed in this CL:
https://chromium-review.googlesource.com/c/chromium/src/+/2206918.

Bug: 1091051
Change-Id: Ifa742b5197b4deba6873a0c90ac180478b91d9a5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2228061Reviewed-by: Alex Gough <ajgo@chromium.org>
Commit-Queue: Evan Liu <evliu@google.com>
Cr-Commit-Position: refs/heads/master@{#775209}

chrome/browser/speech/speech_recognition_service.cc

@@ -4,6 +4,7 @@
 
 #include "chrome/browser/speech/speech_recognition_service.h"
 
+#include "chrome/browser/service_sandbox_type.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/service_process_host.h"