Add flow to enable Google Drive offline mode automatically on first run.

How this works is that we create a WebContents in the background to a Drive
endpoint that will take care of all the offline initialization for the app.
We succeed if a background page is opened; otherwise, we fail if the page does
not load or after a timeout.

BUG=307302
TEST=manual

Review URL: https://codereview.chromium.org/55423004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233501 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/first_run/drive_first_run_controller.h

+// Copyright 2013 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.
+#ifndef CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
+#define CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_
+
+#include "base/basictypes.h"
+#include "base/timer/timer.h"
+#include "chrome/browser/profiles/profile.h"
+
+namespace chromeos {
+
+class DriveWebContentsManager;
+
+// This class is responsible for kicking off the Google Drive offline
+// initialization process. There is an initial delay to avoid contention when
+// the session starts. DriveFirstRunController will manage its own lifetime and
+// destroy itself when the initialization succeeds or fails.
+class DriveFirstRunController {
+ public:
+  DriveFirstRunController();
+  ~DriveFirstRunController();
+
+  // Starts the process to enable offline mode for the user's Drive account.
+  void EnableOfflineMode();
+
+ private:
+  // Used as a callback to indicate whether the offline initialization
+  // succeeds or fails.
+  void OnOfflineInit(bool success);
+
+  // Called when timed out waiting for offline initialization to complete.
+  void OnWebContentsTimedOut();
+
+  // Cleans up internal state and schedules self for deletion.
+  void CleanUp();
+
+  Profile* profile_;
+  scoped_ptr<DriveWebContentsManager> web_contents_manager_;
+  base::OneShotTimer<DriveFirstRunController> web_contents_timer_;
+  base::OneShotTimer<DriveFirstRunController> initial_delay_timer_;
+  bool started_;
+
+  DISALLOW_COPY_AND_ASSIGN(DriveFirstRunController);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_FIRST_RUN_DRIVE_FIRST_RUN_CONTROLLER_H_

chrome/browser/chromeos/login/login_display_host_impl.cc

@@ -26,6 +26,7 @@
 #include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/customization_document.h"
+#include "chrome/browser/chromeos/first_run/drive_first_run_controller.h"
 #include "chrome/browser/chromeos/first_run/first_run_controller.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_settings.h"
@@ -318,6 +319,16 @@ LoginDisplayHostImpl::~LoginDisplayHostImpl() {
     // completion.
     (new FirstRunController())->Start();
   }
+
+  // TODO(tengs): This should be refactored together with the first run UI.
+  // See crbug.com/314934.
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableDriveOfflineFirstRun)) {
+    if (UserManager::Get()->IsCurrentUserNew()) {
+      // DriveOptInController will delete itself when finished.
+      (new DriveFirstRunController())->EnableOfflineMode();
+    }
+  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////

chrome/chrome_browser_chromeos.gypi

@@ -366,6 +366,8 @@
         'browser/chromeos/fileapi/file_system_backend.cc',
         'browser/chromeos/fileapi/file_system_backend.h',
         'browser/chromeos/fileapi/file_system_backend_delegate.h',
+        'browser/chromeos/first_run/drive_first_run_controller.cc',
+        'browser/chromeos/first_run/drive_first_run_controller.h',
         'browser/chromeos/first_run/first_run_controller.cc',
         'browser/chromeos/first_run/first_run_controller.h',
         'browser/chromeos/first_run/first_run_view.cc',

chromeos/chromeos_switches.cc

@@ -82,6 +82,9 @@ const char kEnableCarrierSwitching[]        = "enable-carrier-switching";
 const char kEnableChromeCaptivePortalDetector[] =
     "enable-chrome-captive-portal-detector";
 
+// Enables automatically initializing Google Drive offline mode on first run.
+const char kEnableDriveOfflineFirstRun[] = "enable-drive-offline-first-run";
+
 // Enables reporting recently logged in users for enterprise-managed devices.
 const char kEnableEnterpriseUserReporting[] =
     "enable-enterprise-user-reporting";

chromeos/chromeos_switches.h

@@ -41,6 +41,7 @@ CHROMEOS_EXPORT extern const char kEchoExtensionPath[];
 CHROMEOS_EXPORT extern const char kEnableBackgroundLoader[];
 CHROMEOS_EXPORT extern const char kEnableCarrierSwitching[];
 CHROMEOS_EXPORT extern const char kEnableChromeCaptivePortalDetector[];
+CHROMEOS_EXPORT extern const char kEnableDriveOfflineFirstRun[];
 CHROMEOS_EXPORT extern const char kEnableEnterpriseUserReporting[];
 CHROMEOS_EXPORT extern const char kEnableIMEModeIndicator[];
 CHROMEOS_EXPORT extern const char kEnableKioskMode[];