mac: Allow WebContents key handling to supplant extension overrides of the bookmark shortcut.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 561 matching lines @@
 void BrowserWindowCocoa::ShowAppMenu() {
   // No-op. Mac doesn't support showing the menus via alt keys.
 }
 
 bool BrowserWindowCocoa::PreHandleKeyboardEvent(
     const NativeWebKeyboardEvent& event, bool* is_keyboard_shortcut) {
   if (![BrowserWindowUtils shouldHandleKeyboardEvent:event])
     return false;
 
   if (event.type == blink::WebInputEvent::RawKeyDown &&
-      [controller_ handledByExtensionCommand:event.os_event])
+      [controller_
+          handledByExtensionCommand:event.os_event
+                           priority:ui::AcceleratorManager::kHighPriority])
     return true;
 
   int id = [BrowserWindowUtils getCommandId:event];
   if (id == -1)
     return false;
 
   if (browser_->command_controller()->IsReservedCommandOrKey(id, event)) {
       return [BrowserWindowUtils handleKeyboardEvent:event.os_event
                                             inWindow:window()];
   }
@@ skipping 162 matching lines @@
 
 void BrowserWindowCocoa::ShowPageActionPopup(
     const extensions::Extension* extension) {
   [cocoa_controller() activatePageAction:extension->id()];
 }
 
 void BrowserWindowCocoa::ShowBrowserActionPopup(
     const extensions::Extension* extension) {
   [cocoa_controller() activateBrowserAction:extension->id()];
 }