Allow extensions to remove and override the bookmark shortcut key

chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm

Index: chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm b/chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm
index 92b901fbe6c2033c3b8bff9392b096a6f11c5bb1..62715c8334c3dfb164808e85cc7554fca9e3cbad 100644
--- a/chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm
+++ b/chrome/browser/ui/cocoa/accelerator_utils_cocoa.mm
@@ -50,4 +50,11 @@ bool IsChromeAccelerator(const ui::Accelerator& accelerator, Profile* profile) {
   return id != -1;
 }
 
+ui::Accelerator GetPrimaryChromeAcceleratorForCommandId(int command_id) {
+  const ui::Accelerator* accelerator =
+      AcceleratorsCocoa::GetInstance()->GetAcceleratorForCommand(command_id);
+
+  return accelerator ? *accelerator : ui::Accelerator();
+}
+
 }  // namespace chrome