Promotes a handful of members from WmShell to Shell

ash/common/system/chromeos/palette/tools/screenshot_unittest.cc

Index: ash/common/system/chromeos/palette/tools/screenshot_unittest.cc
diff --git a/ash/common/system/chromeos/palette/tools/screenshot_unittest.cc b/ash/common/system/chromeos/palette/tools/screenshot_unittest.cc
index faf7eaea089d7c80f864788d06b6754fe3554e0c..f66426d17370df0e00c34b46c68c375c3ac03bd5 100644
--- a/ash/common/system/chromeos/palette/tools/screenshot_unittest.cc
+++ b/ash/common/system/chromeos/palette/tools/screenshot_unittest.cc
@@ -8,8 +8,9 @@
 #include "ash/common/system/chromeos/palette/tools/capture_region_mode.h"
 #include "ash/common/system/chromeos/palette/tools/capture_screen_action.h"
 #include "ash/common/test/test_palette_delegate.h"
-#include "ash/common/wm_shell.h"
+#include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
+#include "ash/test/shell_test_api.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 
@@ -26,7 +27,7 @@ class ScreenshotToolTest : public test::AshTestBase {
   void SetUp() override {
     test::AshTestBase::SetUp();
 
-    WmShell::Get()->SetPaletteDelegateForTesting(
+    test::ShellTestApi().SetPaletteDelegate(
         base::MakeUnique<TestPaletteDelegate>());
 
     palette_tool_delegate_ = base::MakeUnique<MockPaletteToolDelegate>();
@@ -34,7 +35,7 @@ class ScreenshotToolTest : public test::AshTestBase {
 
   TestPaletteDelegate* test_palette_delegate() {
     return static_cast<TestPaletteDelegate*>(
-        WmShell::Get()->palette_delegate());
+        Shell::GetInstance()->palette_delegate());
   }
 
  protected: