Factor more colors into NativeTheme.

ui/gfx/native_theme_base.cc

Index: ui/gfx/native_theme_base.cc
diff --git a/ui/gfx/native_theme_base.cc b/ui/gfx/native_theme_base.cc
index 2f9d50e8fae329ff95f3edbbfbc82b5fc1369346..bea60dff29f53d57be849ec5c3fe1775c6e212ed 100644
--- a/ui/gfx/native_theme_base.cc
+++ b/ui/gfx/native_theme_base.cc
@@ -16,12 +16,6 @@
 
 namespace {
 
-// Hardcoded colors for use when there is no system theme (Aura, ChromeOS).
-const SkColor kDefaultDialogBackgroundColor = SkColorSetRGB(200, 200, 200);
-const SkColor kDefaultFocusedBorderColor= SkColorSetRGB(0x4D, 0x90, 0xFE);
-const SkColor kDefaultUnfocusedBorderColor = SkColorSetRGB(0xD9, 0xD9, 0xD9);
-const SkColor kInvalidColorIdColor = SkColorSetRGB(255, 0, 128);
-
 // These are the default dimensions of radio buttons and checkboxes.
 const int kCheckboxAndRadioWidth = 13;
 const int kCheckboxAndRadioHeight = 13;
@@ -208,23 +202,6 @@ void NativeThemeBase::Paint(SkCanvas* canvas,
   }
 }
 
-SkColor NativeThemeBase::GetSystemColor(ColorId color_id) const {
-  // This implementation returns hardcoded colors. It's used by NativeThemeAura
-  // and NativeThemeChromeos and overridden by NativeThemeGtk.
-  switch (color_id) {
-    case kColorId_DialogBackground:
-      return kDefaultDialogBackgroundColor;
-    case kColorId_FocusedBorderColor:
-      return kDefaultFocusedBorderColor;
-    case kColorId_UnfocusedBorderColor:
-      return kDefaultUnfocusedBorderColor;
-    default:
-      NOTREACHED() << "Invalid color_id: " << color_id;
-      break;
-  }
-  return kInvalidColorIdColor;
-}
-
 NativeThemeBase::NativeThemeBase() {
 }