[Mac] Touch Bar support for default browser window state

chrome/common/chrome_features.cc

Index: chrome/common/chrome_features.cc
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index ab7b0939e8fc2b26e44a156eb938f4c749ee7d10..62e7eb1b2afb9409945d6879dc4ce9e532e10d8b 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -70,6 +70,12 @@ const base::Feature kBlockPromptsIfDismissedOften{
 const base::Feature kBrowserHangFixesExperiment{
     "BrowserHangFixesExperiment", base::FEATURE_DISABLED_BY_DEFAULT};
 
+#if defined(OS_MACOSX)
+// Enables or disables the browser's touch bar.
+const base::Feature kBrowserTouchBar{"BrowserTouchBar",
+                                     base::FEATURE_ENABLED_BY_DEFAULT};
+#endif  // defined(OS_MACOSX)
+
 #if defined(OS_ANDROID)
 // Experiment to make Geolocation permissions in the omnibox and the default
 // search engine's search page consistent.