Track the active ExtensionKeybindingRegistry and make it available to EventRewriter.

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

Index: chrome/browser/ui/views/toolbar/toolbar_view.cc
diff --git a/chrome/browser/ui/views/toolbar/toolbar_view.cc b/chrome/browser/ui/views/toolbar/toolbar_view.cc
index 573795fccd7857eeda603eeecd07b73870235446..0a140ccf24b8b4274a546ea189b488494364b2bf 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_view.cc
+++ b/chrome/browser/ui/views/toolbar/toolbar_view.cc
@@ -317,6 +317,11 @@ void ToolbarView::ExecuteExtensionCommand(
   browser_actions_->ExecuteExtensionCommand(extension, command);
 }
 
+bool ToolbarView::IsExtensionCommandRegistered(
+    const ui::Accelerator& accelerator) {
+  return browser_actions_->IsExtensionCommandRegistered(accelerator);
+}
+
 void ToolbarView::ShowAppMenu(bool for_drop) {
   if (wrench_menu_.get() && wrench_menu_->IsShowing())
     return;