Don't use process isolation for bookmark apps.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index f2f72ce4a28c7f8146121f840047bbf6894fbc6b..854ef8b9a989882bca9720e4837da0c74dd6e1cb 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -2196,7 +2196,7 @@ const Extension* ExtensionService::GetDisabledExtensionByWebExtent(
 bool ExtensionService::ExtensionBindingsAllowed(const GURL& url) {
   // Allow bindings for all packaged extensions.
   // Note that GetExtensionByURL may return an Extension for hosted apps
-  // if the URL came from GetEffectiveURL.
+  // (excluding bookmark apps) if the URL came from GetEffectiveURL.
   const Extension* extension = GetExtensionByURL(url);
   if (extension && extension->GetType() != Extension::TYPE_HOSTED_APP)
     return true;