Add about:flags entry for kWalletRequiresFirstSyncSetupComplete

This will make manual testing much easier.

Bug: 1113713
Change-Id: I44eb67a06c33e2fec9450ab00f70de10fc399e2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2442732
Commit-Queue: Marc Treib <[email protected]>
Reviewed-by: Matthias Körber <[email protected]>
Cr-Commit-Position: refs/heads/master@{#813196}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 60e1150..f1dd2bc 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -6659,10 +6659,19 @@
      kOsDesktop,
      FEATURE_VALUE_TYPE(
          browsing_data::features::kEnableBrowsingDataLifetimeManager)},
-    // NOTE: Adding a new flag requires adding a corresponding entry to enum
-    // "LoginCustomFlags" in tools/metrics/histograms/enums.xml. See "Flag
-    // Histograms" in tools/metrics/histograms/README.md (run the
-    // AboutFlagsHistogramTest unit test to verify this process).
+
+#if defined(OS_ANDROID)
+    {"wallet-requires-first-sync-setup",
+     flag_descriptions::kWalletRequiresFirstSyncSetupCompleteName,
+     flag_descriptions::kWalletRequiresFirstSyncSetupCompleteDescription,
+     kOsAndroid,
+     FEATURE_VALUE_TYPE(
+         autofill::features::kWalletRequiresFirstSyncSetupComplete)},
+#endif  // defined(OS_ANDROID)
+        // NOTE: Adding a new flag requires adding a corresponding entry to enum
+        // "LoginCustomFlags" in tools/metrics/histograms/enums.xml. See "Flag
+        // Histograms" in tools/metrics/histograms/README.md (run the
+        // AboutFlagsHistogramTest unit test to verify this process).
 };
 
 class FlagsStateSingleton : public flags_ui::FlagsState::Delegate {