Make the webstore inline install dialog be tab-modal

chrome/browser/extensions/extension_install_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_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 110 matching lines @@
     // Returns the empty string when there should be no "accept" button.
     base::string16 GetAcceptButtonLabel() const;
     base::string16 GetAbortButtonLabel() const;
     base::string16 GetPermissionsHeading(
         PermissionsType permissions_type) const;
     base::string16 GetRetainedFilesHeading() const;
     base::string16 GetRetainedDevicesHeading() const;
 
     bool ShouldShowPermissions() const;
 
+    bool ShouldUseTabModalDialog() const;
+
     // Getters for webstore metadata. Only populated when the type is
     // INLINE_INSTALL_PROMPT, EXTERNAL_INSTALL_PROMPT, or REPAIR_PROMPT.
 
     // The star display logic replicates the one used by the webstore (from
     // components.ratingutils.setFractionalYellowStars). Callers pass in an
     // "appender", which will be repeatedly called back with the star images
     // that they append to the star display area.
     typedef void(*StarAppender)(const gfx::ImageSkia*, void*);
     void AppendRatingStars(StarAppender appender, void* data) const;
     base::string16 GetRatingCount() const;
@@ skipping 324 matching lines @@
   Delegate* delegate_;
 
   // A pre-filled prompt.
   scoped_refptr<Prompt> prompt_;
 
   // Used to show the confirm dialog.
   ShowDialogCallback show_dialog_callback_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_