Collect UMA statistics on which chrome://flags lead to chrome restart on ChromeOS.

tools/about_flags_switches_histogram_ids_checker/changed_file_4.h

Index: tools/about_flags_switches_histogram_ids_checker/changed_file_4.h
diff --git a/tools/strict_enum_value_checker/changed_file_6.h b/tools/about_flags_switches_histogram_ids_checker/changed_file_4.h
similarity index 60%
copy from tools/strict_enum_value_checker/changed_file_6.h
copy to tools/about_flags_switches_histogram_ids_checker/changed_file_4.h
index 7bbbf837520fd16a042b8cddfe5c7e1823d15d69..f751d7c60c869b687c7fe00dbd09aee2a16badf4 100644
--- a/tools/strict_enum_value_checker/changed_file_6.h
+++ b/tools/about_flags_switches_histogram_ids_checker/changed_file_4.h
@@ -11,19 +11,18 @@
 //    2. NO deletions of entries
 //    3. New entries must be added just before mBoundary, never after
 //
-  mBoundary // Do not add below here
 enum MockEnum {
-  mEntry1,
-  mEntry2,
-  mData1,
-  mData2,
-  mEntry3,
-  mInfo1,
-  mData3,
-  mError1,
-  mFunction1,
-  mInfo2,
-  mData4,
+  DEPRECATED_UMA_HISTOGRAM_ID_Entry1,
+  DEPRECATED_UMA_HISTOGRAM_ID_Entry2,
+  UMA_HISTOGRAM_ID_Data1,
+  UMA_HISTOGRAM_ID_Data2,
+  UMA_HISTOGRAM_ID_Entry3,
+  UMA_HISTOGRAM_ID_Info1,
+  UMA_HISTOGRAM_ID_Data3,
+  DEPRECATED_UMA_HISTOGRAM_ID_Error1,
+  UMA_HISTOGRAM_ID_Function1,
+  UMA_HISTOGRAM_ID_Info2,
+  UMA_HISTOGRAM_ID_Data4,
 };
 
 #endif