Change chrome:// favicons in tabstrip based on theming.

chrome/browser/themes/theme_service.cc

Index: chrome/browser/themes/theme_service.cc
diff --git a/chrome/browser/themes/theme_service.cc b/chrome/browser/themes/theme_service.cc
index 64380f1284626dd6a0acd65c4fa54b7cca917a80..3abfc223684dc59dcf036bcd0ad86b9abf321dca 100644
--- a/chrome/browser/themes/theme_service.cc
+++ b/chrome/browser/themes/theme_service.cc
@@ -123,6 +123,10 @@ SkColor ThemeService::BrowserThemeProvider::GetColor(int id) const {
   return theme_service_.GetColor(id, incognito_);
 }
 
+color_utils::HSL ThemeService::BrowserThemeProvider::GetTint(int id) const {
+  return theme_service_.GetTint(id, incognito_);
+}
+
 int ThemeService::BrowserThemeProvider::GetDisplayProperty(int id) const {
   return theme_service_.GetDisplayProperty(id);
 }