Reuse the code within UpdateCheckMark()

ash/common/system/chromeos/palette/common_palette_tool.cc

Index: ash/common/system/chromeos/palette/common_palette_tool.cc
diff --git a/ash/common/system/chromeos/palette/common_palette_tool.cc b/ash/common/system/chromeos/palette/common_palette_tool.cc
index b8a049304877eb42f6ab14c345e88f66f0480563..672b2ff3e8e34b09fb4e44cb9001bceee299d0e3 100644
--- a/ash/common/system/chromeos/palette/common_palette_tool.cc
+++ b/ash/common/system/chromeos/palette/common_palette_tool.cc
@@ -9,6 +9,7 @@
 #include "ash/common/system/chromeos/palette/palette_tool_manager.h"
 #include "ash/common/system/tray/hover_highlight_view.h"
 #include "ash/common/system/tray/tray_constants.h"
+#include "ash/common/system/tray/tray_utils.h"
 #include "ash/common/system/tray/view_click_listener.h"
 #include "ash/resources/grit/ash_resources.h"
 #include "ash/resources/vector_icons/vector_icons.h"
@@ -52,9 +53,7 @@ void CommonPaletteTool::OnEnable() {
   start_time_ = base::TimeTicks::Now();
 
   if (highlight_view_) {
-    highlight_view_->SetRightViewVisible(true);
-    highlight_view_->SetAccessiblityState(
-        HoverHighlightView::AccessibilityState::CHECKED_CHECKBOX);
+    SetCheckMarkVisible(highlight_view_);
   }
 }
 
@@ -63,9 +62,7 @@ void CommonPaletteTool::OnDisable() {
   AddHistogramTimes(GetToolId(), base::TimeTicks::Now() - start_time_);
 
   if (highlight_view_) {
-    highlight_view_->SetRightViewVisible(false);
-    highlight_view_->SetAccessiblityState(
-        HoverHighlightView::AccessibilityState::UNCHECKED_CHECKBOX);
+    SetCheckMarkInvisible(highlight_view_);
   }
 }
 
@@ -95,12 +92,9 @@ views::View* CommonPaletteTool::CreateDefaultView(const base::string16& name) {
   highlight_view_->set_custom_height(kMenuButtonSize);
 
   if (enabled()) {
-    highlight_view_->SetAccessiblityState(
-        HoverHighlightView::AccessibilityState::CHECKED_CHECKBOX);
+    SetCheckMarkVisible(highlight_view_);
   } else {
-    highlight_view_->SetRightViewVisible(false);
-    highlight_view_->SetAccessiblityState(
-        HoverHighlightView::AccessibilityState::UNCHECKED_CHECKBOX);
+    SetCheckMarkInvisible(highlight_view_);
   }
 
   return highlight_view_;