Swap processes on reload if a hosted app has been installed/uninstalled.

content/browser/tab_contents/navigation_entry.h

Index: content/browser/tab_contents/navigation_entry.h
diff --git a/content/browser/tab_contents/navigation_entry.h b/content/browser/tab_contents/navigation_entry.h
index 671cc5bf90660e8be200a5acc198800b8defa7d1..4c118b3d2208f1038af36cc778f8fda1744004ac 100644
--- a/content/browser/tab_contents/navigation_entry.h
+++ b/content/browser/tab_contents/navigation_entry.h
@@ -206,7 +206,7 @@ class NavigationEntry {
   //
   // Note that the SiteInstance should usually not be changed after it is set,
   // but this may happen if the NavigationEntry was cloned and needs to use a
-  // different SiteInstance.
+  // different SiteInstance, or if a hosted app is installed or uninstalled.
   void set_site_instance(SiteInstance* site_instance);
   SiteInstance* site_instance() const {
     return site_instance_;