[Extensions UI Cocoa] Make disabled actions respond to the keyboard

chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm

Index: chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm b/chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm
index db8a936d128f3f59c343b51fdb6f80c0d80a5ca2..11178a55566436638e111e855bd7f4d6a027bf67 100644
--- a/chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm
+++ b/chrome/browser/ui/cocoa/extensions/extension_action_platform_delegate_cocoa.mm
@@ -14,6 +14,7 @@
 #include "chrome/browser/ui/browser_window.h"
 #import "chrome/browser/ui/cocoa/app_menu/app_menu_controller.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
+#import "chrome/browser/ui/cocoa/extensions/browser_action_button.h"
 #import "chrome/browser/ui/cocoa/extensions/browser_actions_controller.h"
 #import "chrome/browser/ui/cocoa/extensions/extension_popup_controller.h"
 #import "chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.h"
@@ -92,6 +93,20 @@ void ExtensionActionPlatformDelegateCocoa::CloseOverflowMenu() {
     [appMenuController cancel];
 }
 
+void ExtensionActionPlatformDelegateCocoa::ShowContextMenu() {
+  // We should only use this code path for extensions shown in the toolbar.
+  DCHECK(controller_->extension_action()->action_type() ==
+             extensions::ActionInfo::TYPE_BROWSER ||
+         extensions::FeatureSwitch::extension_action_redesign()->IsEnabled());
+  BrowserWindowController* windowController = [BrowserWindowController
+      browserWindowControllerForWindow:controller_->browser()
+                                           ->window()
+                                           ->GetNativeWindow()];
+  BrowserActionsController* actionsController =
+      [[windowController toolbarController] browserActionsController];
+  [[actionsController mainButtonForId:controller_->GetId()] showContextMenu];
+}
+
 NSPoint ExtensionActionPlatformDelegateCocoa::GetPopupPoint() const {
   BrowserWindowController* windowController =
       [BrowserWindowController browserWindowControllerForWindow: