[Mac] Remove BrowserCommandExecutor protocol.

chrome/browser/ui/cocoa/chrome_event_processing_window.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_CHROME_EVENT_PROCESSING_WINDOW_H_
 #define CHROME_BROWSER_UI_COCOA_CHROME_EVENT_PROCESSING_WINDOW_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "ui/base/cocoa/underlay_opengl_hosting_window.h"
 
 // Override NSWindow to access unhandled keyboard events (for command
 // processing); subclassing NSWindow is the only method to do
 // this.
 @interface ChromeEventProcessingWindow : UnderlayOpenGLHostingWindow {
  @private
   BOOL redispatchingEvent_;
   BOOL eventHandled_;
 }
 
 // Sends a key event to |NSApp sendEvent:|, but also makes sure that it's not
 // short-circuited to the RWHV. This is used to send keyboard events to the menu
 // and the cmd-` handler if a keyboard event comes back unhandled from the
 // renderer. The event must be of type |NSKeyDown|, |NSKeyUp|, or
 // |NSFlagsChanged|.
 // Returns |YES| if |event| has been handled.
 - (BOOL)redispatchKeyEvent:(NSEvent*)event;
 
-// See global_keyboard_shortcuts_mac.h for details on the next two functions.
-
-// Checks if |event| is a window keyboard shortcut. If so, dispatches it to the
-// window controller's |executeCommand:| and returns |YES|.
-- (BOOL)handleExtraWindowKeyboardShortcut:(NSEvent*)event;
-
-// Checks if |event| is a delayed window keyboard shortcut. If so, dispatches
-// it to the window controller's |executeCommand:| and returns |YES|.
-- (BOOL)handleDelayedWindowKeyboardShortcut:(NSEvent*)event;
-
-// Checks if |event| is a browser keyboard shortcut. If so, dispatches it to the
-// window controller's |executeCommand:| and returns |YES|.
-- (BOOL)handleExtraBrowserKeyboardShortcut:(NSEvent*)event;
+// Checks if |event| is a window, delayed window, or browser keyboard shortcut.
+// (See global_keyboard_shortcuts_mac.h for details). If so, execute the
+// associated command. Returns YES if the event was handled.
+- (BOOL)handleExtraKeyboardShortcut:(NSEvent*)event;
 
 // Override, so we can handle global keyboard events.
 - (BOOL)performKeyEquivalent:(NSEvent*)theEvent;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_CHROME_EVENT_PROCESSING_WINDOW_H_