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 262786288337e1533c57ab6760ad69bfd53f34ae..61b084b3f1f2e202b565eeb9e652a7dc0a8193a9 100644
--- a/content/browser/tab_contents/render_view_host_manager.cc
+++ b/content/browser/tab_contents/render_view_host_manager.cc
@@ -387,15 +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))
-      return curr_instance->GetRelatedSiteInstance(dest_url);
-    else
-      return entry.site_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:
   //