Show scheme in black and content in gray for data: protocol urls

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm

Index: chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm b/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
index cd2b95faefb8470578fb8128da5b00a47359f88f..f239ea57b2dfdd1fc09b236e4baeabec92a51612 100644
--- a/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
+++ b/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
@@ -563,27 +563,32 @@ void OmniboxViewMac::ApplyTextAttributes(
                            value:@"en_US_POSIX"
                            range:as_entire_string];
 
-  [attributedString addAttribute:NSForegroundColorAttributeName
-                           value:HostTextColor(in_dark_mode)
-                           range:as_entire_string];
-
   url::Component scheme, host;
   AutocompleteInput::ParseForEmphasizeComponents(
       display_text, ChromeAutocompleteSchemeClassifier(profile_), &scheme,
       &host);
-  bool grey_out_url = display_text.substr(scheme.begin, scheme.len) ==
-      base::UTF8ToUTF16(extensions::kExtensionScheme);
-  if (model()->CurrentTextIsURL() &&
-      (host.is_nonempty() || grey_out_url)) {
-    [attributedString addAttribute:NSForegroundColorAttributeName
-                             value:BaseTextColor(in_dark_mode)
-                             range:as_entire_string];
 
-    if (!grey_out_url) {
-      [attributedString addAttribute:NSForegroundColorAttributeName
-                               value:HostTextColor(in_dark_mode)
-                               range:ComponentToNSRange(host)];
-    }
+  const base::string16 url_scheme =
+      display_text.substr(scheme.begin, scheme.len);
+
+  // Determine if any url components should be visually deemphasized.
+  DEEMPHASIZE_COMPONENTS deemphasize =
+      GetDeemphasis(url_scheme, host.is_nonempty());
+
+  [attributedString
+      addAttribute:NSForegroundColorAttributeName
+             value:(deemphasize == NOTHING) ? HostTextColor(in_dark_mode)
+                                            : BaseTextColor(in_dark_mode)
+             range:as_entire_string];
+
+  if (deemphasize == ALL_BUT_SCHEME) {
+    [attributedString addAttribute:NSForegroundColorAttributeName
+                             value:HostTextColor(in_dark_mode)
+                             range:ComponentToNSRange(scheme)];
+  } else if (deemphasize == ALL_BUT_HOST) {
+    [attributedString addAttribute:NSForegroundColorAttributeName
+                             value:HostTextColor(in_dark_mode)
+                             range:ComponentToNSRange(host)];
   }
 
   // TODO(shess): GTK has this as a member var, figure out why.