Block content scripts from executing until user grants permission

chrome/browser/extensions/user_script_master.h

Index: chrome/browser/extensions/user_script_master.h
diff --git a/chrome/browser/extensions/user_script_master.h b/chrome/browser/extensions/user_script_master.h
index 7a56efa810af522f1c7d6cee40deb09e61d1a8a4..ae0be2805950b075a57133e3a9c4ec60590178f3 100644
--- a/chrome/browser/extensions/user_script_master.h
+++ b/chrome/browser/extensions/user_script_master.h
@@ -151,7 +151,8 @@ class UserScriptMaster : public base::RefCountedThreadSafe<UserScriptMaster>,
 
   // Sends the renderer process a new set of user scripts.

[not at google - send to devlin, 2014/05/21 15:01:07]

you might want to add that |changed_extensions| is the set of extension IDs that
have changed since the last update, or ??? if it's the first update.

[Devlin, 2014/05/21 17:05:11]

Done.

   void SendUpdate(content::RenderProcessHost* process,
-                  base::SharedMemory* shared_memory);
+                  base::SharedMemory* shared_memory,
+                  const std::set<std::string>& changed_extensions);
 
   // Manages our notification registrations.
   content::NotificationRegistrar registrar_;
@@ -168,6 +169,10 @@ class UserScriptMaster : public base::RefCountedThreadSafe<UserScriptMaster>,
   // Maps extension info needed for localization to an extension ID.
   ExtensionsInfo extensions_info_;
 
+  // The IDs of the extensions which have changed since the last update sent to
+  // the renderer.
+  std::set<std::string> changed_extensions_;
+
   // If the extensions service has finished loading its initial set of
   // extensions.
   bool extensions_service_ready_;