Temporarily disable extensions and sync while a profile is locked - Profiles Approach

extensions/browser/extension_registry.cc

Index: extensions/browser/extension_registry.cc
diff --git a/extensions/browser/extension_registry.cc b/extensions/browser/extension_registry.cc
index 769539e971931a7368dcac90882b5422f25627aa..99b28b8bceafe419cd0156e120fb95fa0a29bfd8 100644
--- a/extensions/browser/extension_registry.cc
+++ b/extensions/browser/extension_registry.cc
@@ -26,6 +26,7 @@ scoped_ptr<ExtensionSet> ExtensionRegistry::GenerateInstalledExtensionsSet()
   installed_extensions->InsertAll(disabled_extensions_);
   installed_extensions->InsertAll(terminated_extensions_);
   installed_extensions->InsertAll(blacklisted_extensions_);
+  installed_extensions->InsertAll(locked_extensions_);
   return installed_extensions.Pass();
 }
 
@@ -108,6 +109,11 @@ const Extension* ExtensionRegistry::GetExtensionById(const std::string& id,
     if (extension)
       return extension;
   }
+  if (include_mask & LOCKED) {
+    const Extension* extension = locked_extensions_.GetByID(lowercase_id);
+    if (extension)
+      return extension;
+  }
   return NULL;
 }
 
@@ -147,11 +153,21 @@ bool ExtensionRegistry::RemoveBlacklisted(const std::string& id) {
   return blacklisted_extensions_.Remove(id);
 }
 
+bool ExtensionRegistry::AddLocked(
+    const scoped_refptr<const Extension>& extension) {
+  return locked_extensions_.Insert(extension);
+}
+
+bool ExtensionRegistry::RemoveLocked(const std::string& id) {
+  return locked_extensions_.Remove(id);
+}
+
 void ExtensionRegistry::ClearAll() {
   enabled_extensions_.Clear();
   disabled_extensions_.Clear();
   terminated_extensions_.Clear();
   blacklisted_extensions_.Clear();
+  locked_extensions_.Clear();
 }
 
 void ExtensionRegistry::SetDisabledModificationCallback(