[Mac] Update location bar colors when change themes in Material Design.

chrome/browser/ui/cocoa/browser_window_cocoa.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/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #import "base/mac/sdk_forward_declarations.h"
@@ skipping 670 matching lines @@
 void BrowserWindowCocoa::ConfirmBrowserCloseWithPendingDownloads(
       int download_count,
       Browser::DownloadClosePreventionType dialog_type,
       bool app_modal,
       const base::Callback<void(bool)>& callback) {
   callback.Run(true);
 }
 
 void BrowserWindowCocoa::UserChangedTheme() {
   [controller_ userChangedTheme];
+  LocationBarViewMac* locationBar = [controller_ locationBarBridge];
+  if (locationBar) {
+    locationBar->OnThemeChanged();
+  }
 }
 
 void BrowserWindowCocoa::ShowWebsiteSettings(
     Profile* profile,
     content::WebContents* web_contents,
     const GURL& url,
     const security_state::SecurityStateModel::SecurityInfo& security_info) {
   WebsiteSettingsUIBridge::Show(window(), profile, web_contents, url,
                                 security_info);
 }
@@ skipping 142 matching lines @@
 
 void BrowserWindowCocoa::ExecuteExtensionCommand(
     const extensions::Extension* extension,
     const extensions::Command& command) {
   [cocoa_controller() executeExtensionCommand:extension->id() command:command];
 }
 
 ExclusiveAccessContext* BrowserWindowCocoa::GetExclusiveAccessContext() {
   return [controller_ exclusiveAccessController];
 }