Add flag to show toolkit-views dialogs on Mac, start with HTTP-Auth.

chrome/browser/ui/browser_dialogs.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_BROWSER_DIALOGS_H_
 #define CHROME_BROWSER_UI_BROWSER_DIALOGS_H_
 
 #include "base/callback.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
+class LoginHandler;
 class Profile;
 class SkBitmap;
 
 namespace content {
 class BrowserContext;
 class ColorChooser;
 class WebContents;
 }
 
 namespace extensions {
 class Extension;
 }
 
+namespace net {
+class AuthChallengeInfo;
+class URLRequest;
+}
+
 namespace ui {
 class WebDialogDelegate;
 }
 
 namespace chrome {
 
 // Creates and shows an HTML dialog with the given delegate and context.
 // The window is automatically destroyed when it is closed.
 // Returns the created window.
 //
@@ skipping 26 matching lines @@
 void ShowCreateChromeAppShortcutsDialog(
     gfx::NativeWindow parent_window,
     Profile* profile,
     const extensions::Extension* app,
     const base::Callback<void(bool /* created */)>& close_callback);
 
 // Shows a color chooser that reports to the given WebContents.
 content::ColorChooser* ShowColorChooser(content::WebContents* web_contents,
                                         SkColor initial_color);
 
+#if defined(OS_MACOSX)
+
+// For Mac, returns true if Chrome should show an equivalent toolkit-views based
+// dialog using one of the functions below, rather than showing a Cocoa dialog.
+bool ToolkitViewsDialogsEnabled();
+
+#endif
+
+// Creates a toolkit-views based LoginHandler (e.g. HTTP-Auth dialog).

[msw, 2015/08/07 02:23:33]

Hmm, should this be in a TOOLKIT_VIEWS ifdef? Maybe Android and iOS don't use
this file and that's not strictly needed...

[tapted, 2015/08/07 03:40:17]

Done. (It's in non_ios_sources, but there at least one android file using it
--android/color_chooser_dialog_android.cc )

+LoginHandler* CreateLoginHandlerViews(net::AuthChallengeInfo* auth_info,
+                                      net::URLRequest* request);
+
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_BROWSER_DIALOGS_H_