Add policy controlled permission block list for extensions

extensions/browser/management_policy.h

Index: extensions/browser/management_policy.h
diff --git a/extensions/browser/management_policy.h b/extensions/browser/management_policy.h
index 149a598fc38527e595a2be38dc08475ea62694a8..043f4babd9c76d1dd0d8760db8189b6e8a98d7ed 100644
--- a/extensions/browser/management_policy.h
+++ b/extensions/browser/management_policy.h
@@ -7,6 +7,7 @@
 
 #include <set>
 #include <string>
+#include <vector>
 
 #include "base/basictypes.h"
 #include "extensions/common/extension.h"
@@ -87,6 +88,9 @@ class ManagementPolicy {
   void RegisterProvider(Provider* provider);
   void UnregisterProvider(Provider* provider);
 
+  // Like RegisterProvider(), but registers multiple providers instead.
+  void RegisterProviders(std::vector<Provider*> providers);
+
   // Returns true if the user is permitted to install, load, and run the given
   // extension. If not, |error| may be set to an appropriate message.
   bool UserMayLoad(const Extension* extension, base::string16* error) const;