Native themes: Add separator color

ui/native_theme/common_theme.cc

Index: ui/native_theme/common_theme.cc
diff --git a/ui/native_theme/common_theme.cc b/ui/native_theme/common_theme.cc
index d7e54827d46a7e921aca6f316ffb829039c697d5..a9b48f9e0b52d1a4b683eb143f57291eff2aed54 100644
--- a/ui/native_theme/common_theme.cc
+++ b/ui/native_theme/common_theme.cc
@@ -76,6 +76,8 @@ SkColor GetAuraColor(NativeTheme::ColorId color_id,
       SkColorSetA(SK_ColorBLACK, 0x48);
   static const SkColor kMenuSeparatorColor = SkColorSetRGB(0xE9, 0xE9, 0xE9);
   static const SkColor kEnabledMenuItemForegroundColor = SK_ColorBLACK;
+  // Separator:
+  static const SkColor kSeparatorColor = SkColorSetRGB(0xE9, 0xE9, 0xE9);
   // Link:
   static const SkColor kLinkEnabledColor = gfx::kGoogleBlue700;
   // Text selection colors:
@@ -211,6 +213,10 @@ SkColor GetAuraColor(NativeTheme::ColorId color_id,
     case NativeTheme::kColorId_LinkPressed:
       return kLinkEnabledColor;
 
+    // Separator
+    case NativeTheme::kColorId_SeparatorColor:
+      return kSeparatorColor;
+
     // Textfield
     case NativeTheme::kColorId_TextfieldDefaultColor:
       return kTextfieldDefaultColor;