[Mac] Remove BrowserCommandExecutor protocol.

chrome/browser/ui/cocoa/apps/native_app_window_cocoa.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_APPS_NATIVE_APP_WINDOW_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_APPS_NATIVE_APP_WINDOW_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 #include <vector>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
-#import "chrome/browser/ui/cocoa/browser_command_executor.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "extensions/browser/app_window/app_window.h"
 #include "extensions/browser/app_window/native_app_window.h"
 #include "extensions/browser/app_window/size_constraints.h"
 #include "extensions/common/draggable_region.h"
 #include "ui/base/accelerators/accelerator_manager.h"
 #include "ui/gfx/geometry/rect.h"
 
 @class AppNSWindow;
 class ExtensionKeybindingRegistryCocoa;
 class NativeAppWindowCocoa;
 class SkRegion;
 
 // A window controller for a minimal window to host a web app view. Passes
 // Objective-C notifications to the C++ bridge.
-@interface NativeAppWindowController : NSWindowController
-                                      <NSWindowDelegate,
-                                       BrowserCommandExecutor> {
+@interface NativeAppWindowController : NSWindowController<NSWindowDelegate> {
  @private
   NativeAppWindowCocoa* appWindow_;  // Weak; owns self.
 }
 
 @property(assign, nonatomic) NativeAppWindowCocoa* appWindow;
 
 // Consults the Command Registry to see if this |event| needs to be handled as
 // an extension command and returns YES if so (NO otherwise).
 // Only extensions with the given |priority| are considered.
 - (BOOL)handledByExtensionCommand:(NSEvent*)event
@@ skipping 172 matching lines @@
   // handle.
   scoped_ptr<ExtensionKeybindingRegistryCocoa> extension_keybinding_registry_;
 
   // Tracks the last time the extension asked the window to activate.
   base::Time last_activate_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeAppWindowCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_APPS_NATIVE_APP_WINDOW_COCOA_H_