Implemented ForceMaximizeBrowserWindowOnFirstRun policy, added unit test and browser test.

chrome/browser/ui/ash/chrome_shell_delegate.cc

Index: chrome/browser/ui/ash/chrome_shell_delegate.cc
diff --git a/chrome/browser/ui/ash/chrome_shell_delegate.cc b/chrome/browser/ui/ash/chrome_shell_delegate.cc
index 88998525db8117bb5342cdda7a63554ce6da4a56..7cc24ad8d2370a06b759c66286b662cccfd53d94 100644
--- a/chrome/browser/ui/ash/chrome_shell_delegate.cc
+++ b/chrome/browser/ui/ash/chrome_shell_delegate.cc
@@ -7,8 +7,11 @@
 #include "ash/content_support/gpu_support_impl.h"
 #include "ash/wm/window_state.h"
 #include "ash/wm/window_util.h"
+#include "base/prefs/pref_service.h"

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Move this to the #if defined(OS_CHROMEOS) section.

[peletskyi, 2015/04/01 18:55:47]

Done.

 #include "chrome/browser/app_mode/app_mode_utils.h"
+#include "chrome/browser/chromeos/profiles/profile_helper.h"

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Move this to the #if defined(OS_CHROMEOS) section.

[peletskyi, 2015/04/01 18:55:47]

Done.

 #include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/browser/profiles/profile.h"

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Move this to the #if defined(OS_CHROMEOS) section.

[peletskyi, 2015/04/01 18:55:47]

Done.

 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/app_list/app_list_view_delegate.h"
@@ -17,6 +20,7 @@
 #include "chrome/browser/ui/ash/launcher/chrome_launcher_controller.h"
 #include "chrome/browser/ui/ash/launcher/launcher_context_menu.h"
 #include "chrome/browser/ui/browser_commands.h"
+#include "chrome/common/pref_names.h"

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Move this to the #if defined(OS_CHROMEOS) section.

[peletskyi, 2015/04/01 18:55:47]

Done.

 #include "chrome/grit/chromium_strings.h"
 #include "components/signin/core/common/profile_management_switches.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -88,6 +92,19 @@ bool ChromeShellDelegate::IsMultiAccountEnabled() const {
   return false;
 }
 
+bool ChromeShellDelegate::ForceMaximizeOnFirstRun() const {
+#if defined(OS_CHROMEOS)
+  const user_manager::User* const user =

[bartfab (slow), 2015/04/01 14:22:43]

Nit: #include "components/user_manager/user.h"

[peletskyi, 2015/04/01 18:55:47]

Done.

+      user_manager::UserManager::Get()->GetActiveUser();
+  if (user)

[bartfab (slow), 2015/04/01 14:22:43]

Nit: Add curly braces.

[peletskyi, 2015/04/01 18:55:47]

Done.

+    return chromeos::ProfileHelper::Get()
+        ->GetProfileByUser(user)
+        ->GetPrefs()
+        ->GetBoolean(prefs::kForceMaximizeOnFirstRun);
+#endif
+  return false;
+}
+
 void ChromeShellDelegate::Exit() {
   chrome::AttemptUserExit();
 }