Mac: Show a context menu for poup window.

chrome/browser/cocoa/browser_window_cocoa.mm

Index: chrome/browser/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/cocoa/browser_window_cocoa.mm b/chrome/browser/cocoa/browser_window_cocoa.mm
index d7c182812d95a473ed877e19fedd5d77361b396b..e5dce143150b4feef9a0350dcb2625685dc8ee48 100644
--- a/chrome/browser/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/cocoa/browser_window_cocoa.mm
@@ -569,6 +569,27 @@ void BrowserWindowCocoa::Observe(NotificationType type,
   }
 }
 
+bool BrowserWindowCocoa::IsCommandIdChecked(int command_id) const {
+  // Currently no items in our popup context menu are check-able.
+  return false;
+}
+
+bool BrowserWindowCocoa::IsCommandIdEnabled(int command_id) const {
+  return browser_->command_updater()->IsCommandEnabled(command_id);
+}
+
+bool BrowserWindowCocoa::GetAcceleratorForCommandId(
+    int command_id,
+    menus::Accelerator* accelerator) {
+  // This is not necessary because Cocoa does not show short-cut keys
+  // for context menu items.
+  return false;
+}
+
+void BrowserWindowCocoa::ExecuteCommand(int command_id) {
+  browser_->ExecuteCommand(command_id);
+}
+
 void BrowserWindowCocoa::DestroyBrowser() {
   [controller_ destroyBrowser];