Add management policy function allowing extensions to be disabled.

chrome/browser/extensions/management_policy.cc

Index: chrome/browser/extensions/management_policy.cc
diff --git a/chrome/browser/extensions/management_policy.cc b/chrome/browser/extensions/management_policy.cc
index 710968f9d6b1eace0425c6b71437876a99f3f4ca..2d169cb181c1aa6d5e61b228a6b75a22cde83514 100644
--- a/chrome/browser/extensions/management_policy.cc
+++ b/chrome/browser/extensions/management_policy.cc
@@ -39,6 +39,13 @@ bool ManagementPolicy::Provider::MustRemainEnabled(const Extension* extension,
   return false;
 }
 
+bool ManagementPolicy::Provider::MustRemainDisabled(
+    const Extension* extension,
+    Extension::DisableReason* reason,
+    string16* error) const {
+  return false;
+}
+
 void ManagementPolicy::RegisterProvider(Provider* provider) {
   providers_.insert(provider);
 }
@@ -65,6 +72,17 @@ bool ManagementPolicy::MustRemainEnabled(const Extension* extension,
                              false, extension, error);
 }
 
+bool ManagementPolicy::MustRemainDisabled(const Extension* extension,
+                                          Extension::DisableReason* reason,
+                                          string16* error) const {
+  for (ProviderList::const_iterator it = providers_.begin();
+       it != providers_.end(); ++it)
+    if ((*it)->MustRemainDisabled(extension, reason, error))
+      return true;
+
+  return false;
+}
+
 void ManagementPolicy::UnregisterAllProviders() {
   providers_.clear();
 }