Add LTS to the version in feedback reports

Add LTS to the reported feedback in feedback reports. This will
allow queries in Listnr to either include or exclude LTS
customers.

Bug: chromium:1146354
Change-Id: Iee4c724206666bff804991bf8c00610883ac5cb1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521182Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Miriam Zimmerman <mutexlox@chromium.org>
Commit-Queue: Victor-Gabriel Savu <vsavu@google.com>
Cr-Commit-Position: refs/heads/master@{#825744}

chrome/browser/feedback/system_logs/log_sources/chrome_internal_log_source.cc

@@ -48,10 +48,12 @@
 #include "chrome/browser/chromeos/login/demo_mode/demo_session.h"
 #include "chrome/browser/chromeos/login/login_pref_names.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/metrics/chromeos_metrics_provider.h"
 #include "chrome/browser/metrics/enrollment_status.h"
 #include "chromeos/constants/chromeos_features.h"
 #include "chromeos/dbus/util/version_loader.h"
+#include "chromeos/settings/cros_settings_names.h"
 #include "chromeos/system/statistics_provider.h"
 #endif
 
@@ -91,6 +93,7 @@ constexpr char kChromeEnrollmentTag[] = "ENTERPRISE_ENROLLED";
 constexpr char kHWIDKey[] = "HWID";
 constexpr char kSettingsKey[] = "settings";
 constexpr char kLocalStateSettingsResponseKey[] = "Local State: settings";
+constexpr char kLTSChromeVersionPrefix[] = "LTS ";
 constexpr char kArcStatusKey[] = "CHROMEOS_ARC_STATUS";
 constexpr char kMonitorInfoKey[] = "monitor_info";
 constexpr char kAccountTypeKey[] = "account_type";
@@ -242,6 +245,14 @@ std::string GetChromeVersionString() {
 #endif
 
 #if defined(OS_CHROMEOS)
+  // If the device is receiving LTS updates, add a prefix to the version string.
+  // The value of the policy is ignored here.
+  std::string value;
+  const bool is_lts = chromeos::CrosSettings::Get()->GetString(
+      chromeos::kReleaseLtsTag, &value);
+  if (is_lts)
+    browser_version = kLTSChromeVersionPrefix + browser_version;
+
   // If lacros-chrome is allowed & supported, and launched before, which
   // is indicated by |lacros_version| in BrowserManager being set to non-empty
   // string during lacros startup, attach its version in the chrome