iwyu: Include stringprintf.h where appropriate, part 1.

chrome/browser/sync/engine/syncer_proto_util.cc

Index: chrome/browser/sync/engine/syncer_proto_util.cc
diff --git a/chrome/browser/sync/engine/syncer_proto_util.cc b/chrome/browser/sync/engine/syncer_proto_util.cc
index a3a61776fd6de85d3d8f85908375560f2feae324..e96af94423096697d903be9c8c5422cabbb8be76 100644
--- a/chrome/browser/sync/engine/syncer_proto_util.cc
+++ b/chrome/browser/sync/engine/syncer_proto_util.cc
@@ -5,7 +5,7 @@
 #include "chrome/browser/sync/engine/syncer_proto_util.h"
 
 #include "base/format_macros.h"
-#include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "chrome/browser/sync/engine/net/server_connection_manager.h"
 #include "chrome/browser/sync/engine/syncer.h"
 #include "chrome/browser/sync/engine/syncer_types.h"
@@ -342,19 +342,20 @@ const std::string& SyncerProtoUtil::NameFromCommitEntryResponse(
 
 std::string SyncerProtoUtil::SyncEntityDebugString(
     const sync_pb::SyncEntity& entry) {
-  return StringPrintf("id: %s, parent_id: %s, "
-                      "version: %"PRId64"d, "
-                      "mtime: %" PRId64"d (client: %" PRId64"d), "
-                      "ctime: %" PRId64"d (client: %" PRId64"d), "
-                      "name: %s, sync_timestamp: %" PRId64"d, "
-                      "%s ",
-                      entry.id_string().c_str(),
-                      entry.parent_id_string().c_str(),
-                      entry.version(),
-                      entry.mtime(), ServerTimeToClientTime(entry.mtime()),
-                      entry.ctime(), ServerTimeToClientTime(entry.ctime()),
-                      entry.name().c_str(), entry.sync_timestamp(),
-                      entry.deleted() ? "deleted, ":"");
+  return base::StringPrintf(
+      "id: %s, parent_id: %s, "
+      "version: %"PRId64"d, "
+      "mtime: %" PRId64"d (client: %" PRId64"d), "
+      "ctime: %" PRId64"d (client: %" PRId64"d), "
+      "name: %s, sync_timestamp: %" PRId64"d, "
+      "%s ",
+      entry.id_string().c_str(),
+      entry.parent_id_string().c_str(),
+      entry.version(),
+      entry.mtime(), ServerTimeToClientTime(entry.mtime()),
+      entry.ctime(), ServerTimeToClientTime(entry.ctime()),
+      entry.name().c_str(), entry.sync_timestamp(),
+      entry.deleted() ? "deleted, ":"");
 }
 
 namespace {