Delegate decision what site instances can be rendered in what process to chrome

content/shell/shell_content_browser_client.h

Index: content/shell/shell_content_browser_client.h
diff --git a/content/shell/shell_content_browser_client.h b/content/shell/shell_content_browser_client.h
index 6c2ce10b63035e1ede5a7be41cb60cfe871bdbbf..033897c644dcd0c3ce938a85c8de1c9ad9b35199 100644
--- a/content/shell/shell_content_browser_client.h
+++ b/content/shell/shell_content_browser_client.h
@@ -49,6 +49,8 @@ class ShellContentBrowserClient : public ContentBrowserClient
   virtual bool ShouldUseProcessPerSite(BrowserContext* browser_context,
                                        const GURL& effective_url) OVERRIDE;
   virtual bool IsURLSameAsAnySiteInstance(const GURL& url) OVERRIDE;
+  virtual bool IsSuitableHost(RenderProcessHost* process_host,
+                              const GURL& site_url) OVERRIDE;
   virtual std::string GetCanonicalEncodingNameByAliasName(
       const std::string& alias_name) OVERRIDE;
   virtual void AppendExtraCommandLineSwitches(CommandLine* command_line,