Dynamically compute tab/frame separator color.

chrome/browser/themes/theme_properties.cc

Index: chrome/browser/themes/theme_properties.cc
diff --git a/chrome/browser/themes/theme_properties.cc b/chrome/browser/themes/theme_properties.cc
index e79812f236844ae2faf9eccc69d6e3f132a247b4..b791becf5419733f6a3f834bdad4414293f7047e 100644
--- a/chrome/browser/themes/theme_properties.cc
+++ b/chrome/browser/themes/theme_properties.cc
@@ -132,7 +132,6 @@ const SkColor kDefaultDetachedBookmarkBarSeparator[] = {
     SkColorSetRGB(170, 170, 171), SkColorSetRGB(182, 180, 182)};
 const SkColor kDefaultDetachedBookmarkBarSeparatorIncognito[] = {
     SkColorSetRGB(170, 170, 171), SkColorSetRGB(0x28, 0x28, 0x28)};
-const SkColor kDefaultToolbarTopSeparator = SkColorSetA(SK_ColorBLACK, 0x40);
 
 #if defined(OS_MACOSX)
 const SkColor kDefaultColorFrameVibrancyOverlay[] = {
@@ -362,8 +361,6 @@ SkColor ThemeProperties::GetDefaultColor(int id, bool otr) {
     case COLOR_DETACHED_BOOKMARK_BAR_BACKGROUND:
       return otr ? kDefaultDetachedBookmarkBarBackgroundIncognito[mode]
                  : kDefaultDetachedBookmarkBarBackground[mode];
-    case COLOR_TOOLBAR_TOP_SEPARATOR:
-      return kDefaultToolbarTopSeparator;
 #if defined(OS_MACOSX)
     case COLOR_FRAME_VIBRANCY_OVERLAY:
       return kDefaultColorFrameVibrancyOverlay[otr];