[MD] Implement incognito colors as a NativeTheme (for Aura).

chrome/browser/ui/views/location_bar/icon_label_bubble_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/location_bar/icon_label_bubble_view.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/ui/views/layout_constants.h"
 #include "chrome/browser/ui/views/location_bar/background_with_1_px_border.h"
 #include "ui/base/resource/material_design/material_design_controller.h"
@@ skipping 103 matching lines @@
                     width() - pre_label_width - GetBubbleOuterPadding(false),
                     height());
 }
 
 void IconLabelBubbleView::OnNativeThemeChanged(
     const ui::NativeTheme* native_theme) {
   if (!ui::MaterialDesignController::IsModeMaterial())
     return;
 
   label_->SetEnabledColor(GetTextColor());
-  SkColor border_color = GetBorderColor();
-  SkColor background_color = SkColorSetA(border_color, 0x13);
+
+  bool inverted =
+      color_utils::GetLuminanceForColor(parent_background_color_) < 128;
+  SkColor border_color = inverted ? SK_ColorWHITE : GetBorderColor();
+  SkColor background_color =
+      inverted ? SK_ColorWHITE : SkColorSetA(border_color, 0x13);
   set_background(
       new BackgroundWith1PxBorder(background_color, border_color, false));
   SetLabelBackgroundColor(background_color);
 }
 
 gfx::Size IconLabelBubbleView::GetSizeForLabelWidth(int width) const {
   gfx::Size size(image_->GetPreferredSize());
   if (ShouldShowBackground()) {
     const int non_label_width = GetBubbleOuterPadding(true) +
                                 GetImageAndPaddingWidth() +
@@ skipping 43 matching lines @@
 }
 
 void IconLabelBubbleView::OnPaint(gfx::Canvas* canvas) {
   if (!ShouldShowBackground())
     return;
   if (background_painter_)
     background_painter_->Paint(canvas, size());
   if (background())
     background()->Paint(canvas, this);
 }