[Material][Mac] Fix text color in incognito omnibox

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 2bf381da901a7b6da84306537604f33f2e35c315..0432dfdd14e1b68babd6528be8568577a745608f 100644
--- a/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
+++ b/chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm
@@ -588,6 +588,12 @@ void OmniboxViewMac::ApplyTextAttributes(
                            value:@"en_US_POSIX"
                            range:as_entire_string];
 
+  if (ui::MaterialDesignController::IsModeMaterial()) {
+    [attributedString addAttribute:NSForegroundColorAttributeName
+                             value:HostTextColor(in_dark_mode)
+                             range:as_entire_string];
+  }
+
   url::Component scheme, host;
   AutocompleteInput::ParseForEmphasizeComponents(
       display_text, ChromeAutocompleteSchemeClassifier(profile_), &scheme,