chromeos: Removed enable magnifier from palette delegate.

ash/aura/wm_shell_aura.cc

Index: ash/aura/wm_shell_aura.cc
diff --git a/ash/aura/wm_shell_aura.cc b/ash/aura/wm_shell_aura.cc
index 01127cf3893d76cb86a69fea8e2b2867cb403b8b..ff88e2bbc975faae74e422f3f6326208fc8589e5 100644
--- a/ash/aura/wm_shell_aura.cc
+++ b/ash/aura/wm_shell_aura.cc
@@ -20,6 +20,7 @@
 #include "ash/display/window_tree_host_manager.h"
 #include "ash/host/ash_window_tree_host_init_params.h"
 #include "ash/laser/laser_pointer_controller.h"
+#include "ash/magnifier/partial_magnification_controller.h"
 #include "ash/metrics/task_switch_metrics_recorder.h"
 #include "ash/shared/immersive_fullscreen_controller.h"
 #include "ash/shell.h"
@@ -281,6 +282,10 @@ void WmShellAura::SetLaserPointerEnabled(bool enabled) {
   Shell::GetInstance()->laser_pointer_controller()->SetEnabled(enabled);
 }
 
+void WmShellAura::SetPartialMagnifierEnabled(bool enabled) {
+  Shell::GetInstance()->partial_magnification_controller()->SetEnabled(enabled);
+}
+
 void WmShellAura::CreatePointerWatcherAdapter() {
   pointer_watcher_adapter_ = base::MakeUnique<PointerWatcherAdapter>();
 }