Remove the WARNING security level.

chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/omnibox/omnibox_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
@@ skipping 91 matching lines @@
   }
   return in_dark_mode ? [NSColor whiteColor] : [NSColor blackColor];
 }
 NSColor* SecureSchemeColor(bool in_dark_mode) {
   if (!ui::MaterialDesignController::IsModeMaterial()) {
     return ColorWithRGBBytes(0x07, 0x95, 0x00);
   }
   return in_dark_mode ? skia::SkColorToSRGBNSColor(SK_ColorWHITE)
                       : skia::SkColorToSRGBNSColor(gfx::kGoogleGreen700);
 }
-NSColor* SecurityWarningSchemeColor(bool in_dark_mode) {
-  return in_dark_mode
-      ? skia::SkColorToSRGBNSColor(SkColorSetA(SK_ColorWHITE, 0x7F))
-      : skia::SkColorToSRGBNSColor(gfx::kGoogleYellow700);
-}
 NSColor* SecurityErrorSchemeColor(bool in_dark_mode) {
   if (!ui::MaterialDesignController::IsModeMaterial()) {
     return ColorWithRGBBytes(0xa2, 0x00, 0x00);
   }
   return in_dark_mode
       ? skia::SkColorToSRGBNSColor(SkColorSetA(SK_ColorWHITE, 0x7F))
       : skia::SkColorToSRGBNSColor(gfx::kGoogleRed700);
 }
 
 const char kOmniboxViewMacStateKey[] = "OmniboxViewMacState";
@@ skipping 61 matching lines @@
 
 // static
 NSColor* OmniboxViewMac::GetSecureTextColor(
     security_state::SecurityStateModel::SecurityLevel security_level,
     bool in_dark_mode) {
   if (security_level == security_state::SecurityStateModel::EV_SECURE ||
       security_level == security_state::SecurityStateModel::SECURE) {
     return SecureSchemeColor(in_dark_mode);
   }
 
-  if (security_level == security_state::SecurityStateModel::SECURITY_ERROR)
-    return SecurityErrorSchemeColor(in_dark_mode);
-
-  DCHECK_EQ(security_state::SecurityStateModel::SECURITY_WARNING,
+  DCHECK_EQ(security_state::SecurityStateModel::SECURITY_ERROR,
             security_level);
-  return SecurityWarningSchemeColor(in_dark_mode);
+  return SecurityErrorSchemeColor(in_dark_mode);
 }
 
 OmniboxViewMac::OmniboxViewMac(OmniboxEditController* controller,
                                Profile* profile,
                                CommandUpdater* command_updater,
                                AutocompleteTextField* field)
     : OmniboxView(
           controller,
           base::WrapUnique(new ChromeOmniboxClient(controller, profile))),
       profile_(profile),
@@ skipping 921 matching lines @@
                               display_text);
   NSDictionary* notification_info = @{
       NSAccessibilityAnnouncementKey : announcement,
       NSAccessibilityPriorityKey :     @(NSAccessibilityPriorityHigh)
   };
   NSAccessibilityPostNotificationWithUserInfo(
       [field_ window],
       NSAccessibilityAnnouncementRequestedNotification,
       notification_info);
 }