Add site_instance_id to ProcessMap::Item.

chrome/browser/extensions/extension_info_map.h

Index: chrome/browser/extensions/extension_info_map.h
diff --git a/chrome/browser/extensions/extension_info_map.h b/chrome/browser/extensions/extension_info_map.h
index e8f1afa71156bb4790304e804230fbfbf74408ce..a4673ac8343b3c8e9d6c1a5cafb63a1935e8a72a 100644
--- a/chrome/browser/extensions/extension_info_map.h
+++ b/chrome/browser/extensions/extension_info_map.h
@@ -55,11 +55,13 @@ class ExtensionInfoMap : public base::RefCountedThreadSafe<ExtensionInfoMap> {
 
   // Adds an entry to process_map_.
   void RegisterExtensionProcess(const std::string& extension_id,
-                                int process_id);
+                                int process_id,
+                                int site_instance_id);
 
   // Removes an entry from process_map_.
   void UnregisterExtensionProcess(const std::string& extension_id,
-                                  int process_id);
+                                  int process_id,
+                                  int site_instance_id);
   void UnregisterAllExtensionsInProcess(int process_id);
 
   // Returns true if there is exists an extension with the same origin as