[Autofill Assistant] Pass default email to Model

Before this CL, the default email was collected but never passed to the
model.
Unit tests for the model handling are already in place.

Bug: b/140781117
Change-Id: I97b14a3a830206160fccc899cc4dd166d9e93d32
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1908543Reviewed-by: Clemens Arbesser <arbesser@google.com>
Commit-Queue: Sandro Maggi <sandromaggi@google.com>
Cr-Commit-Position: refs/heads/master@{#714192}

chrome/android/features/autofill_assistant/java/src/org/chromium/chrome/browser/autofill_assistant/user_data/AssistantCollectUserDataModel.java

@@ -366,4 +366,9 @@ public class AssistantCollectUserDataModel extends PropertyModel {
     private void setThirdPartyPrivacyNoticeText(String text) {
         set(THIRDPARTY_PRIVACY_NOTICE_TEXT, text);
     }
+
+    @CalledByNative
+    private void setDefaultEmail(String email) {
+        set(DEFAULT_EMAIL, email);
+    }
 }

chrome/browser/android/autofill_assistant/ui_controller_android.cc

@@ -960,6 +960,10 @@ void UiControllerAndroid::OnCollectUserDataOptionsChanged(
       env, jmodel,
       CreateJavaAdditionalSections(
           env, collect_user_data_options->additional_appended_sections));
+  Java_AssistantCollectUserDataModel_setDefaultEmail(
+      env, jmodel,
+      base::android::ConvertUTF8ToJavaString(
+          env, collect_user_data_options->default_email));
 
   Java_AssistantCollectUserDataModel_setVisible(env, jmodel, true);
 }