update_engine: Deprecate EOL Status

This is not used anymore. It has been replaced by date based EOL.

It has been deprecated from Chrome per CL:1891467

BUG=chromium:1005511
TEST=sudo FEATURES=test emerge update_engine-client update_engine

Change-Id: I047ca8d641906208728e89adb7c430b71ab11239
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/1891571
Tested-by: Amin Hassani <ahassani@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Jae Hoon Kim <kimjae@chromium.org>
diff --git a/omaha_request_action.h b/omaha_request_action.h
index 96f09e9..3f66de9 100644
--- a/omaha_request_action.h
+++ b/omaha_request_action.h
@@ -183,11 +183,9 @@
   bool PersistCohortData(const std::string& prefs_key,
                          const std::string& new_value);
 
-  // Parse and persist the end-of-life status flag sent back in the updatecheck
-  // tag attributes. In addition, the optional end-of-life date flag will also
-  // be parsed and persisted. The flags will be validated and stored in the
-  // Prefs.
-  bool PersistEolStatus(const std::map<std::string, std::string>& attrs);
+  // Parses and persists the end-of-life date flag sent back in the updatecheck
+  // tag attributes. The flags will be validated and stored in the Prefs.
+  bool PersistEolInfo(const std::map<std::string, std::string>& attrs);
 
   // If this is an update check request, initializes
   // |ping_active_days_| and |ping_roll_call_days_| to values that may