Add flag for App Service Intent Handling.

This CL adds a feature flag for using the App Service to provide data
for intent handling.

BUG=853604

Change-Id: I3d67dcb56071bc958e598459fb2c68fdc2d9fd4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1792034
Commit-Queue: Maggie Cai <[email protected]>
Reviewed-by: Dominick Ng <[email protected]>
Cr-Commit-Position: refs/heads/master@{#694674}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 0728e8b..dab8d8a7 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -3893,6 +3893,11 @@
      flag_descriptions::kAppServiceAshDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(features::kAppServiceAsh)},
 
+    {"app-service-intent-handling",
+     flag_descriptions::kAppServiceIntentHandlingName,
+     flag_descriptions::kAppServiceIntentHandlingDescription, kOsCrOS,
+     FEATURE_VALUE_TYPE(features::kAppServiceIntentHandling)},
+
     {"app-service-shelf", flag_descriptions::kAppServiceShelfName,
      flag_descriptions::kAppServiceShelfDescription, kOsCrOS,
      FEATURE_VALUE_TYPE(features::kAppServiceShelf)},