Convert app_launch_index and page_index from int to StringOrdinal.

chrome/browser/extensions/unpacked_installer.cc

Index: chrome/browser/extensions/unpacked_installer.cc
diff --git a/chrome/browser/extensions/unpacked_installer.cc b/chrome/browser/extensions/unpacked_installer.cc
index 9bbea9af195e489550f61e402108c00afabb372c..eabbfe6a34e0a409d0608725f79d37d9f2882ff1 100644
--- a/chrome/browser/extensions/unpacked_installer.cc
+++ b/chrome/browser/extensions/unpacked_installer.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_file_util.h"
+#include "chrome/common/string_ordinal.h"
 
 using content::BrowserThread;
 
@@ -56,7 +57,7 @@ void SimpleExtensionLoadPrompt::ShowPrompt() {
 void SimpleExtensionLoadPrompt::InstallUIProceed() {
   if (service_weak_.get())
     service_weak_->OnExtensionInstalled(
-        extension_, false, -1);  // Not from web store.
+        extension_, false, StringOrdinal());  // Not from web store.
   delete this;
 }
 
@@ -209,7 +210,7 @@ void UnpackedInstaller::OnLoaded(
   }
   service_weak_->OnExtensionInstalled(extension,
                                       false,  // Not from web store.
-                                      -1);
+                                      StringOrdinal());
 }
 
 }  // namespace extensions