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

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 05a62ac0c7b6bab3def9ee93b4e3ad75cc40be39..9e6a913245dab61d146fb6e654e8b20263a7b666 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -558,6 +558,16 @@ bool ChromeContentRendererClient::CrossesExtensionExtents(WebFrame* frame,
   if (old_url.is_empty() && frame->opener())
     old_url = frame->opener()->url();
 
+  // If this is a reload, check whether it has the wrong process type.  We
+  // should send it to the browser if it's an extension URL (e.g., hosted app)
+  // in a normal process, or if it's a process for an extension that has been
+  // uninstalled.
+  if (old_url == new_url) {
+    bool is_extension_url = !!extensions->GetByURL(new_url);
+    if (is_extension_url != extension_dispatcher_->is_extension_process())
+      return true;
+  }
+
   return !extensions->InSameExtent(old_url, new_url);
 }