Clean up NativeTheme (particularly CommonTheme).

ui/views/style/platform_style_mac.mm

Index: ui/views/style/platform_style_mac.mm
diff --git a/ui/views/style/platform_style_mac.mm b/ui/views/style/platform_style_mac.mm
index 707c2d9f1f31d36e61122853ea1419bec6853914..866bba64424ff4c8a7f9876c0567c8dbd7287280 100644
--- a/ui/views/style/platform_style_mac.mm
+++ b/ui/views/style/platform_style_mac.mm
@@ -80,10 +80,8 @@ SkColor PlatformStyle::TextColorForButton(
 void PlatformStyle::ApplyLabelButtonTextStyle(
     views::Label* label,
     ButtonColorByState* color_by_state) {
-  const ui::NativeTheme* theme = label->GetNativeTheme();
   ButtonColorByState& colors = *color_by_state;
-  colors[Button::STATE_PRESSED] =
-      theme->GetSystemColor(ui::NativeTheme::kColorId_ButtonHighlightColor);
+  colors[Button::STATE_PRESSED] = SK_ColorWHITE;

[sky, 2016/10/03 16:12:05]

How come there isn't a constant for this?

[Evan Stade, 2016/10/03 19:46:44]

in what sense? Here in this file or in NativeTheme?

I don't think it belongs in NativeTheme if it's only used in this one place, and
it will be removed anyway as soon as Harmony is default (this whole function
goes away).

[sky, 2016/10/03 21:25:15]

Ok, fair enouh.

 }
 
 // static