Gtk3: Refactor GtkButtonImageSource::GetImageForScale

chrome/browser/ui/libgtkui/native_theme_gtk3.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 "chrome/browser/ui/libgtkui/native_theme_gtk3.h"
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/ui/libgtkui/chrome_gtk_frame.h"
 #include "chrome/browser/ui/libgtkui/chrome_gtk_menu_subclasses.h"
@@ skipping 45 matching lines @@
 void PaintWidget(cc::PaintCanvas* canvas,
                  const gfx::Rect& rect,
                  GtkStyleContext* context,
                  BackgroundRenderMode bg_mode,
                  bool render_frame) {
   canvas->drawBitmap(
       GetWidgetBitmap(rect.size(), context, bg_mode, render_frame), rect.x(),
       rect.y());
 }
 
-GtkStateFlags StateToStateFlags(NativeThemeGtk3::State state) {
-  switch (state) {
-    case NativeThemeGtk3::kDisabled:
-      return GTK_STATE_FLAG_INSENSITIVE;
-    case NativeThemeGtk3::kHovered:
-      return GTK_STATE_FLAG_PRELIGHT;
-    case NativeThemeGtk3::kNormal:
-      return GTK_STATE_FLAG_NORMAL;
-    case NativeThemeGtk3::kPressed:
-      return static_cast<GtkStateFlags>(GTK_STATE_FLAG_PRELIGHT |
-                                        GTK_STATE_FLAG_ACTIVE);
-    default:
-      NOTREACHED();
-      return GTK_STATE_FLAG_NORMAL;
-  }
-}
-
 SkColor SkColorFromColorId(ui::NativeTheme::ColorId color_id) {
   const SkColor kPositiveTextColor = SkColorSetRGB(0x0b, 0x80, 0x43);
   const SkColor kNegativeTextColor = SkColorSetRGB(0xc5, 0x39, 0x29);
 
   switch (color_id) {
     // Windows
     case ui::NativeTheme::kColorId_WindowBackground:
     // Dialogs
     case ui::NativeTheme::kColorId_DialogBackground:
     case ui::NativeTheme::kColorId_BubbleBackground:
@@ skipping 511 matching lines @@
 
   if (frame_top_area.incognito) {
     bitmap = SkBitmapOperations::CreateHSLShiftedBitmap(
         bitmap, kDefaultTintFrameIncognito);
   }
 
   canvas->drawBitmap(bitmap, rect.x(), rect.y());
 }
 
 }  // namespace libgtkui