MacViews: Enable views based Download recovery dialog behind secondary-ui-md flag.

chrome/browser/download/download_danger_prompt.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_DOWNLOAD_DOWNLOAD_DANGER_PROMPT_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DANGER_PROMPT_H_
 
 #include "base/callback_forward.h"
 #include "chrome/common/safe_browsing/csd.pb.h"
 
@@ skipping 15 matching lines @@
   enum Action {
     // The user chose to proceed down the dangerous path.
     ACCEPT,
     // The user chose not to proceed down the dangerous path.
     CANCEL,
     // The user dismissed the dialog without making an explicit choice.
     DISMISS,
   };
   typedef base::Callback<void(Action)> OnDone;
 
-  // Return a new self-deleting DownloadDangerPrompt. |accepted| or |canceled|
-  // will be run when the the respective action is invoked. |canceled| may also
-  // be called when |item| is either no longer dangerous or no longer in
-  // progress, or if the tab corresponding to |web_contents| is
-  // closing. The returned DownloadDangerPrompt* is only used for testing. The
-  // caller does not own the object and receive no guarantees about lifetime.
-  // If |show_context|, then the prompt message will contain some information
-  // about the download and its danger; otherwise it won't.
+  // Return a new self-deleting DownloadDangerPrompt. The returned
+  // DownloadDangerPrompt* is only used for testing. The caller does not own the
+  // object and receives no guarantees about lifetime. If |show_context|, then
+  // the prompt message will contain some information about the download and its
+  // danger; otherwise it won't. |done| is a callback called when the ACCEPT,
+  // CANCEL or DISMISS action is invoked. |done| may be called with the CANCEL
+  // action even when |item| is either no longer dangerous or no longer in
+  // progress, or if the tab corresponding to |web_contents| is closing.
   static DownloadDangerPrompt* Create(content::DownloadItem* item,
                                       content::WebContents* web_contents,
                                       bool show_context,
                                       const OnDone& done);
 
   // Only to be used by tests. Subclasses must override to manually call the
   // respective button click handler.
   virtual void InvokeActionForTesting(Action action) = 0;
 
   // Sends download recovery report to safe browsing backend.
   // Since it only records download url (DownloadItem::GetURL()), user's
   // action (click through or not) and its download danger type, it isn't gated
   // by user's extended reporting preference (i.e.
   // prefs::kSafeBrowsingExtendedReportingEnabled). We should not put any extra
   // information in this report.
   static void SendSafeBrowsingDownloadReport(
       safe_browsing::ClientSafeBrowsingReportRequest::ReportType report_type,
       bool did_proceed,
       const content::DownloadItem& download);
 
  protected:
   // Records UMA stats for a download danger prompt event.
   static void RecordDownloadDangerPrompt(bool did_proceed,
                                          const content::DownloadItem& download);
+
+ private:
+  // Returns a toolkit-views based download danger prompt.
+  static DownloadDangerPrompt* CreateDownloadDangerPromptViews(
+      content::DownloadItem* item,
+      content::WebContents* web_contents,
+      bool show_context,
+      const OnDone& done);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_DANGER_PROMPT_H_