[ios] Disable unsupported features for "catalyst" environment

The extensions build for Chrome on iOS uses features that are not
supported in "catalyst" environment, so disable them when the app
is build for that environment.

Bug: 1138425
Change-Id: I160ad6b0288f27601d696f8b09fdfe3a3b8e68ce
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2497453
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Mike Pinkerton <pinkerton@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821751}

ios/build/chrome_build.gni

@@ -67,8 +67,17 @@ declare_args() {
   ios_chrome_cpe_entitlements_additions = []
 }
 
-# ScreenTime is only available in iOS 14.0+ SDK.
-ios_enable_screen_time = xcode_version_int >= 1200
+# ScreenTime is only available in iOS 14.0+ SDK. It is not available either
+# in the iOS support libraries used by "catalyst" environment.
+ios_enable_screen_time =
+    xcode_version_int >= 1200 && target_environment != "catalyst"
+
+# Some extensions uses API that are not available in "catalyst" environment.
+if (target_environment == "catalyst") {
+  ios_enable_content_widget_extension = false
+  ios_enable_search_widget_extension = false
+  ios_enable_credential_provider_extension = false
+}
 
 # Configure whether breakpad support is enabled.
 breakpad_enabled = is_official_build && is_chrome_branded