Mac-specific implementation of the GlobalShortcutListener class that

chrome/browser/extensions/api/commands/command_service.cc

Index: chrome/browser/extensions/api/commands/command_service.cc
diff --git a/chrome/browser/extensions/api/commands/command_service.cc b/chrome/browser/extensions/api/commands/command_service.cc
index 37f51b3ba177e2bfbf99118eda8b53dcae9accf1..99993bde467a3414bb3082beecee7eee83cf7eae 100644
--- a/chrome/browser/extensions/api/commands/command_service.cc
+++ b/chrome/browser/extensions/api/commands/command_service.cc
@@ -79,10 +79,17 @@ bool InitialBindingsHaveBeenAssigned(
 }
 
 bool IsWhitelistedGlobalShortcut(const extensions::Command& command) {
+  // Non-global shortcuts are always allowed.
   if (!command.global())
     return true;
+  // Global shortcuts must be (Ctrl|Command)-Shift-[0-9].
+#if defined OS_MACOSX
+  if (!command.accelerator().IsCmdDown())
+    return false;
+#else
   if (!command.accelerator().IsCtrlDown())
     return false;
+#endif
   if (!command.accelerator().IsShiftDown())
     return false;
   return (command.accelerator().key_code() >= ui::VKEY_0 &&