Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

chrome/browser/ui/views/toolbar/browser_actions_container.cc

Index: chrome/browser/ui/views/toolbar/browser_actions_container.cc
diff --git a/chrome/browser/ui/views/toolbar/browser_actions_container.cc b/chrome/browser/ui/views/toolbar/browser_actions_container.cc
index 5ed94f3e2f00e37eb91ffd966dbf4b2c33d79a12..da445a004e0ba6c9d9aee4d6bf0c8e18e275f914 100644
--- a/chrome/browser/ui/views/toolbar/browser_actions_container.cc
+++ b/chrome/browser/ui/views/toolbar/browser_actions_container.cc
@@ -7,6 +7,7 @@
 #include "base/compiler_specific.h"
 #include "base/stl_util.h"
 #include "chrome/browser/extensions/extension_action_manager.h"
+#include "chrome/browser/extensions/extension_commands_global_registry.h"
 #include "chrome/browser/extensions/extension_util.h"
 #include "chrome/browser/extensions/extension_view_host.h"
 #include "chrome/browser/extensions/tab_helper.h"
@@ -269,6 +270,13 @@ void BrowserActionsContainer::ExecuteExtensionCommand(
                                                  command.accelerator());
 }
 
+bool BrowserActionsContainer::IsExtensionCommandRegistered(
+    const ui::Accelerator& accelerator) {
+  return extensions::ExtensionCommandsGlobalRegistry::Get(browser_->profile())
+             ->IsAcceleratorRegistered(accelerator) ||
+         extension_keybinding_registry_->IsAcceleratorRegistered(accelerator);
+}
+
 bool BrowserActionsContainer::ShownInsideMenu() const {
   return in_overflow_mode();
 }