[conversions] Add about flags entries for API and debug mode

Adds about flag entries for enabling the API as well as the debug mode
version. Exposed for developer testing.

Bug: 1082421
Change-Id: Ib68277248ba35c563932d7d296cce6b74e77ad66
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2198645
Commit-Queue: John Delaney <[email protected]>
Reviewed-by: Charlie Harrison <[email protected]>
Cr-Commit-Position: refs/heads/master@{#768515}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index cc6ea4f..02361b3 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -5585,6 +5585,15 @@
      FEATURE_VALUE_TYPE(
          autofill::features::kAutofillEnableCardNicknameManagement)},
 
+    {"conversion-measurement-api",
+     flag_descriptions::kConversionMeasurementApiName,
+     flag_descriptions::kConversionMeasurementApiDescription, kOsAll,
+     FEATURE_VALUE_TYPE(features::kConversionMeasurement)},
+    {"conversion-measurement-debug-mode",
+     flag_descriptions::kConversionMeasurementDebugModeName,
+     flag_descriptions::kConversionMeasurementDebugModeDescription, kOsAll,
+     SINGLE_VALUE_TYPE(switches::kConversionsDebugMode)},
+
     // 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