[Mac] Factor out keyboard shortcut handling from ChromeEventProcessingWindow.

ui/views/cocoa/native_widget_mac_nswindow.h

 // Copyright 2014 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 UI_VIEWS_COCOA_NATIVE_WIDGET_MAC_NSWINDOW_H_
 #define UI_VIEWS_COCOA_NATIVE_WIDGET_MAC_NSWINDOW_H_
 
 #import <Cocoa/Cocoa.h>
 
+#import "ui/base/cocoa/command_dispatcher.h"
 #include "ui/views/views_export.h"
 
 // The NSWindow used by BridgedNativeWidget. Provides hooks into AppKit that
 // can only be accomplished by overriding methods.
 VIEWS_EXPORT
-@interface NativeWidgetMacNSWindow : NSWindow
+@interface NativeWidgetMacNSWindow : NSWindow<CommandDispatchingWindow> {
+ @private
+  base::scoped_nsobject<CommandDispatcher> commandDispatcher_;
+}
+
+// Set a CommandDispatcherDelegate, i.e. to implement key event handling.
+- (void)setCommandDispatcherDelegate:(id<CommandDispatcherDelegate>)delegate;

[tapted, 2015/08/26 06:46:54]

as discussed, this can come in the follow-up

[jackhou1, 2015/08/26 07:38:17]

Done.

+
 @end
 
 #endif  // UI_VIEWS_COCOA_NATIVE_WIDGET_MAC_NSWINDOW_H_