chromeos: Makes mushrome use simplified display management

ash/wm/workspace/workspace_layout_manager_unittest.cc

Index: ash/wm/workspace/workspace_layout_manager_unittest.cc
diff --git a/ash/wm/workspace/workspace_layout_manager_unittest.cc b/ash/wm/workspace/workspace_layout_manager_unittest.cc
index 462f43283f9f4dfcadf52ea4dfc2d589775b6881..539cd2c358ebc30e2119d8037459d9049a78d40e 100644
--- a/ash/wm/workspace/workspace_layout_manager_unittest.cc
+++ b/ash/wm/workspace/workspace_layout_manager_unittest.cc
@@ -480,7 +480,7 @@ TEST_F(WorkspaceLayoutManagerTest, SizeToWorkArea) {
   // TODO: fix. This test verifies that when a window is added the bounds are
   // adjusted. CreateTestWindow() for mus adds, then sets the bounds (this comes
   // from NativeWidgetAura), which means this test now fails for aura-mus.
-  if (Shell::GetAshConfig() != Config::MASH) {
+  if (Shell::GetAshConfig() == Config::CLASSIC) {
     EXPECT_EQ(gfx::Rect(gfx::Point(100, 101), work_area).ToString(),
               window->GetBounds().ToString());
   }