Remove unused references to NativeTheme in TrayPopupItemStyle.

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

 // Copyright 2016 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 "ash/common/system/chromeos/palette/palette_tray.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/wm_shelf.h"
@@ skipping 66 matching lines @@
 
 class TitleView : public views::View, public views::ButtonListener {
  public:
   explicit TitleView(PaletteTray* palette_tray) : palette_tray_(palette_tray) {
     // TODO(tdanderson|jdufault): Use TriView to handle the layout of the title.
     // See crbug.com/614453.
     auto* box_layout =
         new views::BoxLayout(views::BoxLayout::kHorizontal, 0, 0, 0);
     SetLayoutManager(box_layout);
 
-    title_label_ =
+    auto title_label =
         new views::Label(l10n_util::GetStringUTF16(IDS_ASH_STYLUS_TOOLS_TITLE));
-    title_label_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
-    AddChildView(title_label_);
-    box_layout->SetFlexForView(title_label_, 1);
+    title_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
+    AddChildView(title_label);
+    TrayPopupItemStyle style(TrayPopupItemStyle::FontStyle::TITLE);
+    style.SetupLabel(title_label);
+    box_layout->SetFlexForView(title_label, 1);
     if (MaterialDesignController::IsSystemTrayMenuMaterial()) {
       help_button_ =
           new SystemMenuButton(this, TrayPopupInkDropStyle::HOST_CENTERED,
                                kSystemMenuHelpIcon, IDS_ASH_STATUS_TRAY_HELP);
       settings_button_ = new SystemMenuButton(
           this, TrayPopupInkDropStyle::HOST_CENTERED, kSystemMenuSettingsIcon,
           IDS_ASH_STATUS_TRAY_SETTINGS);
     } else {
       gfx::ImageSkia help_icon =
           gfx::CreateVectorIcon(kSystemMenuHelpIcon, kMenuIconColor);
@@ skipping 13 matching lines @@
       settings_button_ = settings_button;
     }
 
     AddChildView(help_button_);
     AddChildView(settings_button_);
   }
 
   ~TitleView() override {}
 
  private:
-  // views::View:
-  void OnNativeThemeChanged(const ui::NativeTheme* theme) override {
-    UpdateStyle();
-  }
-
   // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override {
     if (sender == settings_button_) {
       palette_tray_->RecordPaletteOptionsUsage(
           PaletteTrayOptions::PALETTE_SETTINGS_BUTTON);
       WmShell::Get()->system_tray_controller()->ShowPaletteSettings();
       palette_tray_->HidePalette();
     } else if (sender == help_button_) {
       palette_tray_->RecordPaletteOptionsUsage(
           PaletteTrayOptions::PALETTE_HELP_BUTTON);
       WmShell::Get()->system_tray_controller()->ShowPaletteHelp();
       palette_tray_->HidePalette();
     } else {
       NOTREACHED();
     }
   }
 
-  void UpdateStyle() {
-    TrayPopupItemStyle style(GetNativeTheme(),
-                             TrayPopupItemStyle::FontStyle::TITLE);
-    style.SetupLabel(title_label_);
-  }
-
   // Unowned pointers to button views so we can determine which button was
   // clicked.
   views::View* settings_button_;
   views::View* help_button_;
-  // Needed for UpdateStyles()
-  views::Label* title_label_;
   PaletteTray* palette_tray_;
 
   DISALLOW_COPY_AND_ASSIGN(TitleView);
 };
 
 }  // namespace
 
 PaletteTray::PaletteTray(WmShelf* wm_shelf)
     : TrayBackgroundView(wm_shelf),
       palette_tool_manager_(new PaletteToolManager(this)),
@@ skipping 286 matching lines @@
   } else {
     UpdateIconVisibility();
   }
 }
 
 void PaletteTray::UpdateIconVisibility() {
   SetVisible(is_palette_enabled_ && IsInUserSession());
 }
 
 }  // namespace ash