| Index: content/browser/site_instance.cc | 
| diff --git a/content/browser/site_instance.cc b/content/browser/site_instance.cc | 
| index a12110943419e926b4b2bed1412bba16c1e36543..ed8cd9b7bedc371198ac2fb03d29c17ae6b1641e 100644 | 
| --- a/content/browser/site_instance.cc | 
| +++ b/content/browser/site_instance.cc | 
| @@ -25,8 +25,11 @@ static bool IsURLSameAsAnySiteInstance(const GURL& url) { | 
| url.spec() == chrome::kAboutShorthangURL; | 
| } | 
|  | 
| +int32 SiteInstance::next_site_instance_id_ = 1; | 
| + | 
| SiteInstance::SiteInstance(BrowsingInstance* browsing_instance) | 
| -    : browsing_instance_(browsing_instance), | 
| +    : id_(next_site_instance_id_++), | 
| +      browsing_instance_(browsing_instance), | 
| render_process_host_factory_(NULL), | 
| process_(NULL), | 
| max_page_id_(-1), | 
|  |