Don't reload into an app process.

content/browser/tab_contents/render_view_host_manager.cc

Index: content/browser/tab_contents/render_view_host_manager.cc
diff --git a/content/browser/tab_contents/render_view_host_manager.cc b/content/browser/tab_contents/render_view_host_manager.cc
index adfa501f24084156003fdbd37ff7daeb3bd2508e..61b084b3f1f2e202b565eeb9e652a7dc0a8193a9 100644
--- a/content/browser/tab_contents/render_view_host_manager.cc
+++ b/content/browser/tab_contents/render_view_host_manager.cc
@@ -387,22 +387,9 @@ SiteInstance* RenderViewHostManager::GetSiteInstanceForEntry(
   NavigationController& controller = delegate_->GetControllerForRenderManager();
   content::BrowserContext* browser_context = controller.browser_context();
 
-  // If the entry has an instance already we should use it, unless the URL
-  // is part of an app that has been installed or uninstalled since the last
-  // visit.
-  if (entry.site_instance()) {
-    if (entry.site_instance()->HasWrongProcessForURL(dest_url)) {
-      // If we need to swap to a different SiteInstance, the new one should have
-      // the same max_page_id as the current one so that it identifies new vs
-      // existing navigations correctly.  We also need to update the entry's
-      // SiteInstance, which we will do in TabContents::NavigateToEntry.
-      SiteInstance* new_instance =
-          curr_instance->GetRelatedSiteInstance(dest_url);
-      new_instance->UpdateMaxPageID(curr_instance->max_page_id());
-      return new_instance;
-    }
+  // If the entry has an instance already we should use it.
+  if (entry.site_instance())
     return entry.site_instance();
-  }
 
   // (UGLY) HEURISTIC, process-per-site only:
   //