Promotes a handful of members from WmShell to Shell

ash/test/shell_test_api.cc

Index: ash/test/shell_test_api.cc
diff --git a/ash/test/shell_test_api.cc b/ash/test/shell_test_api.cc
index 8c8293c4f9eb088522a151751330807de86fbe76..4f5435751cf389208665d1ef295710b635dafeb0 100644
--- a/ash/test/shell_test_api.cc
+++ b/ash/test/shell_test_api.cc
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 #include "ash/test/shell_test_api.h"
-
+#include "ash/common/palette_delegate.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/display/display_configuration_controller.h"
 #include "ash/root_window_controller.h"
@@ -12,6 +12,8 @@
 namespace ash {
 namespace test {
 
+ShellTestApi::ShellTestApi() : ShellTestApi(Shell::GetInstance()) {}
+
 ShellTestApi::ShellTestApi(Shell* shell) : shell_(shell) {}
 
 SystemGestureEventFilter* ShellTestApi::system_gesture_event_filter() {
@@ -38,6 +40,11 @@ void ShellTestApi::DisableDisplayAnimator() {
   shell_->display_configuration_controller()->ResetAnimatorForTest();
 }
 
+void ShellTestApi::SetPaletteDelegate(
+    std::unique_ptr<PaletteDelegate> palette_delegate) {
+  shell_->palette_delegate_ = std::move(palette_delegate);
+}
+
 void ShellTestApi::SetSessionStateDelegate(
     SessionStateDelegate* session_state_delegate) {
   shell_->session_state_delegate_.reset(session_state_delegate);