Toggle DocumentsUI on/off using ChromeOS flag.

chrome/browser/ui/app_list/arc/arc_app_utils.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/app_list/arc/arc_app_utils.h"
 
 #include <memory>
 #include <string>
 
 #include "ash/shell.h"
 #include "base/bind.h"
+#include "base/feature_list.h"
 #include "base/json/json_writer.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/arc/arc_session_manager.h"
 #include "chrome/browser/chromeos/arc/arc_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/arc/arc_app_list_prefs.h"
 #include "chrome/browser/ui/ash/launcher/arc_app_deferred_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/arc_app_shelf_id.h"
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/session_manager_client.h"
 #include "components/arc/arc_bridge_service.h"
+#include "components/arc/arc_features.h"
 #include "components/arc/arc_service_manager.h"
 #include "components/arc/arc_util.h"
 #include "components/arc/common/intent_helper.mojom.h"
 #include "ui/aura/window.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/event_constants.h"
 
 // Helper macro which returns the AppInstance.
 #define GET_APP_INSTANCE(method_name)                                    \
@@ skipping 134 matching lines @@
   }
 
   DISALLOW_COPY_AND_ASSIGN(LaunchAppWithoutSize);
 };
 
 }  // namespace
 
 const char kPlayStoreAppId[] = "gpkmicpkkebkmabiaedjognfppcchdfa";
 const char kPlayStorePackage[] = "com.android.vending";
 const char kPlayStoreActivity[] = "com.android.vending.AssetBrowserActivity";
+const char kFilesAppId[] = "clippbnfpgifdekheldlleoeiiababjg";
 const char kSettingsAppId[] = "mconboelelhjpkbdhhiijkgcimoangdj";
 
 bool ShouldShowInLauncher(const std::string& app_id) {
-  return (app_id != kSettingsAppId);
+  if (app_id == kFilesAppId) {
+    return base::FeatureList::IsEnabled(kShowArcFilesAppFeature);
+  } else {
+    return (app_id != kSettingsAppId);
+  }
 }
 
 bool LaunchAppWithRect(content::BrowserContext* context,
                        const std::string& app_id,
                        const gfx::Rect& target_rect,
                        int event_flags) {
   ArcAppListPrefs* prefs = ArcAppListPrefs::Get(context);
   CHECK(prefs);
 
   std::unique_ptr<ArcAppListPrefs::AppInfo> app_info = prefs->GetApp(app_id);
@@ skipping 260 matching lines @@
     return false;
 
   const ArcAppListPrefs* const arc_prefs = ArcAppListPrefs::Get(context);
   if (!arc_prefs)
     return false;
 
   return arc_prefs->IsRegistered(ArcAppShelfId::FromString(id).app_id());
 }
 
 }  // namespace arc