cros: Use "regular" extension session type for child users

chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc

Index: chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc
diff --git a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc
index ea2f17e75e40479959545a185c103861d81ad4d9..79386a8eeb6b1cab9590e10b5e13666b2d6b62bf 100644
--- a/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc
+++ b/chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager_browsertest.cc
@@ -792,9 +792,7 @@ IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest, LargeGuestWallpaper) {
       wallpaper_manager_test_utils::kLargeGuestWallpaperColor));
 }
 
-// Fails (crbug/657180)
-IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest,
-                       DISABLED_SmallChildWallpaper) {
+IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest, SmallChildWallpaper) {
   if (!ash::test::AshTestHelper::SupportsMultipleDisplays())
     return;
   CreateCmdlineWallpapers();
@@ -807,9 +805,7 @@ IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest,
       wallpaper_manager_test_utils::kSmallChildWallpaperColor));
 }
 
-// Fails (crbug/657180)
-IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest,
-                       DISABLED_LargeChildWallpaper) {
+IN_PROC_BROWSER_TEST_F(WallpaperManagerBrowserTest, LargeChildWallpaper) {
   if (!ash::test::AshTestHelper::SupportsMultipleDisplays())
     return;