Don't use process isolation for bookmark apps.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 3853866cc2885f82e2853c3384b73dba49582390..9fbaaeca2ad4ef0b4a05a937630f8f37c4d5dfd3 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -348,6 +348,11 @@ GURL ChromeContentBrowserClient::GetEffectiveURL(
   if (!extension)
     return url;
 
+  // Bookmark apps do not use the hosted app process model, and should be
+  // treated as normal URLs.
+  if (extension->from_bookmark())
+    return url;
+
   // If the URL is part of an extension's web extent, convert it to an
   // extension URL.
   return extension->GetResourceURL(url.path());