Revert 114083 - Convert app_launch_index and page_index from int to StringOrdinal.

chrome/browser/extensions/crx_installer.cc

Index: chrome/browser/extensions/crx_installer.cc
===================================================================
--- chrome/browser/extensions/crx_installer.cc	(revision 114254)
+++ chrome/browser/extensions/crx_installer.cc	(working copy)
@@ -132,6 +132,7 @@
       extensions_enabled_(frontend_weak->extensions_enabled()),
       delete_source_(false),
       create_app_shortcut_(false),
+      page_index_(-1),
       frontend_weak_(frontend_weak),
       profile_(frontend_weak->profile()),
       client_(client),
@@ -586,7 +587,7 @@
   // Tell the frontend about the installation and hand off ownership of
   // extension_ to it.
   frontend_weak_->OnExtensionInstalled(extension_, is_gallery_install(),
-                                       page_ordinal_);
+                                       page_index_);
 
   NotifyCrxInstallComplete(extension_.get());