cocoa: add --use-views-task-manager

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 5b0ceda3f8b4a3876502a7f790237e24162884b1..742bb367e5a1dabb9e071c8308c5b9bfcc9ed217 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -21,6 +21,8 @@ const base::Feature kAllowAutoplayUnmutedInWebappManifestScope{
 // Enables Javascript execution via AppleScript.
 const base::Feature kAppleScriptExecuteJavaScript{
     "AppleScriptExecuteJavaScript", base::FEATURE_ENABLED_BY_DEFAULT};
+const base::Feature kViewsTaskManager{"ViewsTaskManager",

[tapted, 2017/03/13 02:03:06]

nit: add a comment. (see chrome_features.h:18) E.g.

// Use the Toolkit-Views based Task Manager window.

+                                      base::FEATURE_DISABLED_BY_DEFAULT};
 #endif  // defined(OS_MACOSX)
 
 #if defined(OS_CHROMEOS)