Remove unused color from NativeTheme.

ui/native_theme/native_theme_aura.cc

Index: ui/native_theme/native_theme_aura.cc
diff --git a/ui/native_theme/native_theme_aura.cc b/ui/native_theme/native_theme_aura.cc
index 3f2fcea885dbcc57e634b020ea0c001fc059d8d1..3bdd3127337fd4d87aa3d7088dab041736f01ce7 100644
--- a/ui/native_theme/native_theme_aura.cc
+++ b/ui/native_theme/native_theme_aura.cc
@@ -112,11 +112,6 @@ SkColor NativeThemeAura::GetSystemColor(ColorId color_id) const {
     static const SkColor kResultsTableTextMd = SK_ColorBLACK;
     static const SkColor kResultsTableDimmedTextMd =
         SkColorSetRGB(0x64, 0x64, 0x64);
-    static const SkColor kResultsTableDividerMd = color_utils::AlphaBlend(
-        kResultsTableTextMd, kTextfieldDefaultBackground, 0x34);
-    static const SkColor kResultsTableSelectedDividerMd =
-        color_utils::AlphaBlend(kResultsTableTextMd,
-                                kTextfieldSelectionBackgroundFocused, 0x34);
     static const SkColor kPositiveTextColorMd = SkColorSetRGB(0x0b, 0x80, 0x43);
     static const SkColor kNegativeTextColorMd = SkColorSetRGB(0xc5, 0x39, 0x29);
 
@@ -148,11 +143,6 @@ SkColor NativeThemeAura::GetSystemColor(ColorId color_id) const {
       case kColorId_ResultsTableHoveredUrl:
       case kColorId_ResultsTableSelectedUrl:
         return GetSystemColor(kColorId_LinkEnabled);
-      case kColorId_ResultsTableNormalDivider:
-      case kColorId_ResultsTableHoveredDivider:
-        return kResultsTableDividerMd;
-      case kColorId_ResultsTableSelectedDivider:
-        return kResultsTableSelectedDividerMd;
       case kColorId_ResultsTablePositiveText:
       case kColorId_ResultsTablePositiveHoveredText:
       case kColorId_ResultsTablePositiveSelectedText:
@@ -233,12 +223,6 @@ SkColor NativeThemeAura::GetSystemColor(ColorId color_id) const {
   static const SkColor kResultsTableNormalUrl = kTextfieldSelectionColor;
   static const SkColor kResultsTableSelectedOrHoveredUrl =
       SkColorSetARGB(0xff, 0x0b, 0x80, 0x43);
-  static const SkColor kResultsTableNormalDivider = color_utils::AlphaBlend(
-      kResultsTableNormalText, kTextfieldDefaultBackground, 0x34);
-  static const SkColor kResultsTableHoveredDivider = color_utils::AlphaBlend(
-      kResultsTableHoveredText, kResultsTableHoveredBackground, 0x34);
-  static const SkColor kResultsTableSelectedDivider = color_utils::AlphaBlend(
-      kResultsTableSelectedText, kTextfieldSelectionBackgroundFocused, 0x34);
   const SkColor kPositiveTextColor = SkColorSetRGB(0x0b, 0x80, 0x43);
   const SkColor kNegativeTextColor = SkColorSetRGB(0xc5, 0x39, 0x29);
   static const SkColor kResultsTablePositiveText = color_utils::AlphaBlend(
@@ -381,12 +365,6 @@ SkColor NativeThemeAura::GetSystemColor(ColorId color_id) const {
     case kColorId_ResultsTableHoveredUrl:
     case kColorId_ResultsTableSelectedUrl:
       return kResultsTableSelectedOrHoveredUrl;
-    case kColorId_ResultsTableNormalDivider:
-      return kResultsTableNormalDivider;
-    case kColorId_ResultsTableHoveredDivider:
-      return kResultsTableHoveredDivider;
-    case kColorId_ResultsTableSelectedDivider:
-      return kResultsTableSelectedDivider;
     case kColorId_ResultsTablePositiveText:
       return kResultsTablePositiveText;
     case kColorId_ResultsTablePositiveHoveredText: