[Mac] Remove BrowserCommandExecutor protocol.

chrome/browser/ui/cocoa/browser_window_controller.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
 #include <cmath>
 #include <numeric>
 
 #include "base/command_line.h"
@@ skipping 1246 matching lines @@
     // Remove the command key from the flags, it means "keep the window in
     // the background" in this case.
     modifierFlags &= ~NSCommandKeyMask;
   }
   chrome::ExecuteCommandWithDisposition(
       targetController->browser_.get(), command,
       ui::WindowOpenDispositionFromNSEventWithFlags(
           [NSApp currentEvent], modifierFlags));
 }
 
-// Called when another part of the internal codebase needs to execute a
-// command.
-- (void)executeCommand:(int)command {
-  chrome::ExecuteCommand(browser_.get(), command);
-}
-
 - (BOOL)handledByExtensionCommand:(NSEvent*)event
     priority:(ui::AcceleratorManager::HandlerPriority)priority {
   return extension_keybinding_registry_->ProcessKeyEvent(
       content::NativeWebKeyboardEvent(event), priority);
 }
 
 // StatusBubble delegate method: tell the status bubble the frame it should
 // position itself in.
 - (NSRect)statusBubbleBaseFrame {
   NSView* view = [overlayableContentsController_ view];
@@ skipping 989 matching lines @@
 
 - (BOOL)supportsBookmarkBar {
   return [self supportsWindowFeature:Browser::FEATURE_BOOKMARKBAR];
 }
 
 - (BOOL)isTabbedWindow {
   return browser_->is_type_tabbed();
 }
 
 @end  // @implementation BrowserWindowController(WindowType)