support-tool: Add utility function for DataCollectors

Introduce data_collector_utils.h file which contains utility functions for DataCollectors. The file contains mergeing function for PIIMap.

Bug: b:232199095
Change-Id: I7c977bb222be7aadd7f01857e3b3ea1ec82e210e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3990735
Commit-Queue: Irem Uguz <[email protected]>
Reviewed-by: Pavol Marko <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1068025}
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 3337ed80..7c605123 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -4274,6 +4274,8 @@
       "storage/storage_notification_service_impl.cc",
       "storage/storage_notification_service_impl.h",
       "support_tool/data_collector.h",
+      "support_tool/data_collector_utils.cc",
+      "support_tool/data_collector_utils.h",
       "support_tool/policy_data_collector.cc",
       "support_tool/policy_data_collector.h",
       "support_tool/support_packet_metadata.cc",