[MD] update EV bubble icon and location bar https icons

ui/gfx/color_utils.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 "ui/gfx/color_utils.h"
 
 #include <math.h>
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
@@ skipping 273 matching lines @@
               SkColorGetG(background) * b_weight) / 255.0;
   double b = (SkColorGetB(foreground) * f_weight +
               SkColorGetB(background) * b_weight) / 255.0;
 
   return SkColorSetARGB(static_cast<int>(normalizer),
                         static_cast<int>(r),
                         static_cast<int>(g),
                         static_cast<int>(b));
 }
 
+bool IsDark(SkColor color) {
+  return GetLuminanceForColor(color) < 128;
+}
+
 SkColor BlendTowardOppositeLuminance(SkColor color, SkAlpha alpha) {
-  unsigned char background_luminance =
-      color_utils::GetLuminanceForColor(color);
-  const SkColor blend_color =
-      (background_luminance < 128) ? SK_ColorWHITE : SK_ColorBLACK;
-  return color_utils::AlphaBlend(blend_color, color, alpha);
+  return AlphaBlend(IsDark(color) ? SK_ColorWHITE : SK_ColorBLACK, color,
+                    alpha);
 }
 
 SkColor GetReadableColor(SkColor foreground, SkColor background) {
   const SkColor foreground2 = LumaInvertColor(foreground);
   const double background_luminance = RelativeLuminance(background);
   return (ContrastRatio(RelativeLuminance(foreground), background_luminance) >=
           ContrastRatio(RelativeLuminance(foreground2), background_luminance)) ?
       foreground : foreground2;
 }
 
@@ skipping 17 matching lines @@
 // OS_WIN implementation lives in sys_color_change_listener.cc
 #if !defined(OS_WIN)
 bool IsInvertedColorScheme() {
   return false;
 }
 #endif  // !defined(OS_WIN)
 
 SkColor DeriveDefaultIconColor(SkColor text_color) {
   // This function works similarly to BlendTowardOppositeLuminance, but uses a
   // different blend value for lightening and darkening.
-  unsigned char luminance = color_utils::GetLuminanceForColor(text_color);
-  if (luminance < 128) {
+  if (IsDark(text_color)) {
     // For black text, this comes out to kChromeIconGrey.
     return color_utils::AlphaBlend(SK_ColorWHITE, text_color,
                                    SkColorGetR(gfx::kChromeIconGrey));
   }
   // The dimming is less dramatic when darkening a light color.
   return color_utils::AlphaBlend(SK_ColorBLACK, text_color, 0x33);
 }
 
 }  // namespace color_utils