Set the default activity name for opening app.

Package name alone is not enough for resolving the activity. Set the
default activity name if there is no intent data for resolving the
activity.

Test: Manual
Bug: b/120867066
Change-Id: I38fea46006c7324b88570b9b971ba5bda9aca2a9
Reviewed-on: https://chromium-review.googlesource.com/c/1455273
Commit-Queue: Li Lin <llin@chromium.org>
Reviewed-by: Xiaohui Chen <xiaohuic@chromium.org>
Cr-Commit-Position: refs/heads/master@{#630164}

chrome/browser/ui/ash/assistant/device_actions.cc

@@ -41,6 +41,22 @@ AppStatus GetAndroidAppStatus(const std::string& package_name) {
   return app_id.empty() ? AppStatus::UNAVAILABLE : AppStatus::AVAILABLE;
 }
 
+base::Optional<std::string> GetActivity(const std::string& package_name) {
+  auto* prefs = ArcAppListPrefs::Get(ProfileManager::GetActiveUserProfile());
+  if (!prefs) {
+    LOG(ERROR) << "ArcAppListPrefs is not available.";
+    return base::nullopt;
+  }
+  std::string app_id = prefs->GetAppIdByPackageName(package_name);
+
+  if (!app_id.empty()) {
+    std::unique_ptr<ArcAppListPrefs::AppInfo> app_info = prefs->GetApp(app_id);
+    return base::Optional<std::string>(app_info->activity);
+  }
+
+  return base::nullopt;
+}
+
 }  // namespace
 
 DeviceActions::DeviceActions() {}
@@ -123,12 +139,24 @@ void DeviceActions::OpenAndroidApp(AndroidAppInfoPtr app_info,
     std::move(callback).Run(false);
     return;
   }
+  auto& package_name = app_info->package_name;
 
   arc::mojom::ActivityNamePtr activity = arc::mojom::ActivityName::New();
-  activity->package_name = app_info->package_name;
+  activity->package_name = package_name;
   auto intent = arc::mojom::IntentInfo::New();
   if (!app_info->intent.empty()) {
     intent->data = app_info->intent;
+  } else {
+    // Intent is not specified to resolve the activity, set default activity
+    // name.
+    auto activity_name = GetActivity(package_name);
+    if (!activity_name.has_value()) {
+      LOG(ERROR) << "No activity resolved from package name.";
+      std::move(callback).Run(false);
+      return;
+    }
+
+    activity->activity_name = activity_name.value();
   }
   helper->HandleIntent(std::move(intent), std::move(activity));