Fix IWYU for translate_util.h and translate_util.cc.

This CL just cleans up includes, and doesn't actually change any
behavior.

Change-Id: I9e5f5b0f16f940be0c013214a7f649beb74890e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250551
Commit-Queue: Scott Little <sclittle@chromium.org>
Reviewed-by: Megan Jablonski <megjablon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780405}

components/translate/core/common/translate_util.cc

@@ -4,18 +4,11 @@
 
 #include "components/translate/core/common/translate_util.h"
 
-#include <stddef.h>
-#include <algorithm>
-#include <set>
-#include <vector>
+#include <string>
 
 #include "base/command_line.h"
-#include "base/feature_list.h"
 #include "base/metrics/field_trial_params.h"
-#include "base/stl_util.h"
-#include "components/language/core/common/locale_util.h"
 #include "components/translate/core/common/translate_switches.h"
-#include "url/gurl.h"
 
 namespace translate {
 

components/translate/core/common/translate_util.h

@@ -5,12 +5,8 @@
 #ifndef COMPONENTS_TRANSLATE_CORE_COMMON_TRANSLATE_UTIL_H_
 #define COMPONENTS_TRANSLATE_CORE_COMMON_TRANSLATE_UTIL_H_
 
-#include <string>
-#include <vector>
-
 #include "base/feature_list.h"
-
-class GURL;
+#include "url/gurl.h"
 
 namespace translate {