Mac: Convert all the TabDialogs to Harmony

chrome/browser/ui/cocoa/tab_dialogs_cocoa.h

Index: chrome/browser/ui/cocoa/tab_dialogs_cocoa.h
diff --git a/chrome/browser/ui/cocoa/tab_dialogs_cocoa.h b/chrome/browser/ui/cocoa/tab_dialogs_cocoa.h
index 2d08f81393e45448df2ee4c7a9adf8f56cad0ccd..3e65aa3fd8e4f18d71c39c7275ac66e7b9ea9da4 100644
--- a/chrome/browser/ui/cocoa/tab_dialogs_cocoa.h
+++ b/chrome/browser/ui/cocoa/tab_dialogs_cocoa.h
@@ -14,6 +14,8 @@ class TabDialogsCocoa : public TabDialogs {
   explicit TabDialogsCocoa(content::WebContents* contents);
   ~TabDialogsCocoa() override;
 
+  static TabDialogs* CreateTabDialogsViewsMac(content::WebContents* contents);
+
   // TabDialogs:
   gfx::NativeView GetDialogParentView() const override;
   void ShowCollectedCookies() override;