Making ShowExtensionInstallDialog a callback

chrome/browser/extensions/extension_install_prompt.h

Index: chrome/browser/extensions/extension_install_prompt.h
diff --git a/chrome/browser/extensions/extension_install_prompt.h b/chrome/browser/extensions/extension_install_prompt.h
index 480dfd062caac34e19bbfd38b701a695ab08afc6..d4e728bf1154df492bd85b8743f0c70903d941c0 100644
--- a/chrome/browser/extensions/extension_install_prompt.h
+++ b/chrome/browser/extensions/extension_install_prompt.h
@@ -21,6 +21,7 @@
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
+class ExtensionInstallDialog;
 class ExtensionInstallUI;
 class InfoBarDelegate;
 class MessageLoop;
@@ -199,16 +200,19 @@ class ExtensionInstallPrompt : public ImageLoadingTracker::Observer,
   // the webstore should proceed.
   //
   // We *MUST* eventually call either Proceed() or Abort() on |delegate|.
-  virtual void ConfirmWebstoreInstall(Delegate* delegate,
-                                      const extensions::Extension* extension,
-                                      const SkBitmap* icon);
+  virtual void ConfirmWebstoreInstall(
+      Delegate* delegate,
+      const extensions::Extension* extension,
+      const SkBitmap* icon,
+      scoped_refptr<ExtensionInstallDialog> dialog);
 
   // This is called by the installer to verify whether the installation should
   // proceed. This is declared virtual for testing.
   //
   // We *MUST* eventually call either Proceed() or Abort() on |delegate|.
   virtual void ConfirmInstall(Delegate* delegate,
-                              const extensions::Extension* extension);
+                              const extensions::Extension* extension,
+                              scoped_refptr<ExtensionInstallDialog> dialog);
 
   // This is called by the app handler launcher to verify whether the app
   // should be re-enabled. This is declared virtual for testing.
@@ -311,6 +315,9 @@ class ExtensionInstallPrompt : public ImageLoadingTracker::Observer,
   // Keeps track of extension images being loaded on the File thread for the
   // purpose of showing the install UI.
   ImageLoadingTracker tracker_;
+
+  // Used to show the confirm dialog.
+  scoped_refptr<ExtensionInstallDialog> dialog_;
 };
 
 namespace chrome {