Clean up NativeTheme (particularly CommonTheme).

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

Index: chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
index da5705bea2c72f57d69f622dcd13ebe942eee94a..59a1fee2ac3066227661e6ada74bf2bcad1b542f 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
@@ -848,10 +848,8 @@ class ActiveProfileObserverBridge : public AvatarMenuObserver,
     backgroundColor:(NSColor*)backgroundColor {
   if ((self = [super initWithFrame:frameRect])) {
     backgroundColor_.reset([backgroundColor retain]);
-    // Use a color from Aura, since this button is not trying to look like a
-    // native control.
-    SkColor hoverColor = ui::GetAuraColor(
-        ui::NativeTheme::kColorId_ButtonHoverBackgroundColor, nullptr);
+    // TODO(estade): share this with the Views version of this code.

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

Why not move it now? Maybe in c/b/ui/profile_chooser_constants.h

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

I suspect we want to refactor this code to make it go away completely. But sure,
I can put it there for now.

+    SkColor hoverColor = SkColorSetRGB(0xEA, 0xEA, 0xEA);
     hoverColor_.reset([skia::SkColorToSRGBNSColor(hoverColor) retain]);
 
     [self setBordered:NO];