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

ui/gfx/color_utils.h

Index: ui/gfx/color_utils.h
diff --git a/ui/gfx/color_utils.h b/ui/gfx/color_utils.h
index 72dbb58610a4dd66e852c0384ecdb9f6f48e990c..55bd3e1a0856d9e5841ac2d4ac06f2a9d13850f5 100644
--- a/ui/gfx/color_utils.h
+++ b/ui/gfx/color_utils.h
@@ -88,6 +88,9 @@ GFX_EXPORT double CalculateBoringScore(const SkBitmap& bitmap);
 GFX_EXPORT SkColor AlphaBlend(SkColor foreground, SkColor background,
                               SkAlpha alpha);
 
+// Returns true if the luminance of |color| is closer to black than white.
+GFX_EXPORT bool IsDark(SkColor color);
+
 // Makes a dark color lighter or a light color darker by blending |color| with
 // white or black depending on its current luminance.  |alpha| controls the
 // amount of white or black that will be alpha-blended into |color|.