Use defualt shadow elevation.

components/exo/shell_surface_unittest.cc

 // Copyright 2015 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 "components/exo/shell_surface.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/public/cpp/window_properties.h"
 #include "ash/public/interfaces/window_pin_type.mojom.h"
@@ skipping 606 matching lines @@
   shell_surface->SetRectangularSurfaceShadow(gfx::Rect());
   surface->Commit();
 
   EXPECT_EQ(wm::ShadowElevation::NONE, GetShadowElevation(window));
   EXPECT_FALSE(shadow->layer()->visible());
 
   // 6) This should enable non surface shadow again.
   shell_surface->SetRectangularSurfaceShadow(gfx::Rect(10, 10, 100, 100));
   surface->Commit();
 
-  EXPECT_EQ(wm::ShadowElevation::MEDIUM, GetShadowElevation(window));
+  EXPECT_EQ(wm::ShadowElevation::DEFAULT, GetShadowElevation(window));
   EXPECT_TRUE(shadow->layer()->visible());
 
   // For surface shadow, the underlay is placed at the bottom of shell surfaces.
   EXPECT_EQ(surface->window(), shell_surface->shadow_underlay()->parent());
   EXPECT_EQ(window, shell_surface->shadow_overlay()->parent());
 
   EXPECT_EQ(*surface->window()->children().begin(),
             shell_surface->shadow_underlay());
 }
 
@@ skipping 56 matching lines @@
   shell_surface->SetRectangularShadowEnabled(false);
   surface->Commit();
 
   EXPECT_EQ(wm::ShadowElevation::NONE, GetShadowElevation(window));
   EXPECT_FALSE(shadow->layer()->visible());
 
   // 6) This should enable non surface shadow.
   shell_surface->SetRectangularShadowEnabled(true);
   surface->Commit();
 
-  EXPECT_EQ(wm::ShadowElevation::MEDIUM, GetShadowElevation(window));
+  EXPECT_EQ(wm::ShadowElevation::DEFAULT, GetShadowElevation(window));
   EXPECT_TRUE(shadow->layer()->visible());
 
   // For no surface shadow, both of underlay and overlay should be stacked
   // below the surface window.
   EXPECT_EQ(window, shell_surface->shadow_underlay()->parent());
   EXPECT_EQ(window, shell_surface->shadow_overlay()->parent());
 
   // Shadow overlay should be stacked just above the shadow underlay.
   auto underlay_it =
       std::find(window->children().begin(), window->children().end(),
@@ skipping 25 matching lines @@
   // Expected shadow position/bounds in parent coordinates.
   const gfx::Point expected_shadow_origin(-10, -10);
   const gfx::Rect expected_shadow_bounds(expected_shadow_origin, content_size);
 
   views::Widget* widget = shell_surface->GetWidget();
   aura::Window* window = widget->GetNativeWindow();
   wm::Shadow* shadow = wm::ShadowController::GetShadowForWindow(window);
 
   shell_surface->SetRectangularSurfaceShadow(shadow_bounds);
   surface->Commit();
-  EXPECT_EQ(wm::ShadowElevation::MEDIUM, GetShadowElevation(window));
+  EXPECT_EQ(wm::ShadowElevation::DEFAULT, GetShadowElevation(window));
 
   // Shadow overlay bounds.
   EXPECT_TRUE(shadow->layer()->visible());
   // Origin must be in sync.
   EXPECT_EQ(expected_shadow_origin,
             shadow->layer()->parent()->bounds().origin());
 
   const gfx::Rect work_area =
       display::Screen::GetScreen()->GetPrimaryDisplay().work_area();
   // Maximizing window hides the shadow.
@@ skipping 298 matching lines @@
             shell_surface->surface_for_testing()->window()->bounds().size());
 
   ash::wm::WMEvent minimize_event(ash::wm::WM_EVENT_MINIMIZE);
   ash::WmWindow* window =
       ash::WmWindow::Get(shell_surface->GetWidget()->GetNativeWindow());
   window->GetWindowState()->OnWMEvent(&minimize_event);
 }
 
 }  // namespace
 }  // namespace exo