[Mac] Remove omnibox default Touch Bar items

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.mm

 // Copyright (c) 2011 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/location_bar/autocomplete_text_field_editor.h"
 
 #include "base/mac/sdk_forward_declarations.h"
 #include "base/strings/string_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"  // IDC_*
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #include "chrome/grit/generated_resources.h"
 #import "ui/base/cocoa/find_pasteboard.h"
+#import "ui/base/cocoa/touch_bar_forward_declarations.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/material_design/material_design_controller.h"
 
 namespace {
 
 // Set to true when an instance of this class is running a nested run loop.
 // Since this must always be run on the UI thread, there should never be two
 // simultaneous drags.
 bool gInDrag = false;
 
@@ skipping 42 matching lines @@
     // selectively enable them via context menu, but that submenu is not enabled
     // for the omnibox. The substitutions are unlikely to be useful in any case.
     //
     // Also see http://crbug.com/173405 and http://crbug.com/528014.
     NSTextCheckingTypes checkingTypes = 0;
     [self setEnabledTextCheckingTypes:checkingTypes];
   }
   return self;
 }
 
+// Overridden to prevent unwanted items from appearing in the Touch Bar.
+- (NSTouchBar*)makeTouchBar {
+  return nil;
+}
+
 - (void)updateColorsToMatchTheme {
   if (![[self window] inIncognitoMode]) {
     return;
   }
 
   bool inDarkMode = [[self window] inIncognitoModeWithSystemTheme];
   // Draw a white insertion point for MD Incognito.
   NSColor* insertionPointColor =
       inDarkMode ? [NSColor whiteColor] : [NSColor blackColor];
   [self setInsertionPointColor:insertionPointColor];
@@ skipping 509 matching lines @@
 // ThemedWindowDrawing implementation.
 
 - (void)windowDidChangeTheme {
   [self updateColorsToMatchTheme];
 }
 
 - (void)windowDidChangeActive {
 }
 
 @end