Add policy controlled permission block list for extensions

chrome/browser/extensions/extension_service.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <set>
 
@@ skipping 1688 matching lines @@
     AddNewOrUpdatedExtension(extension,
                              initial_state,
                              install_flags,
                              page_ordinal,
                              install_parameter);
   }
 }
 
 void ExtensionService::OnExtensionManagementSettingsChanged() {
   error_controller_->ShowErrorIfNeeded();
+
+  // Revokes blocked permissions from active_permissions for all extensions.
+  extensions::ExtensionManagement* settings =
+      extensions::ExtensionManagementFactory::GetForBrowserContext(profile());
+  CHECK(settings);
+  scoped_ptr<ExtensionSet> all_extensions(
+      registry_->GenerateInstalledExtensionsSet());
+  for (auto extension : *all_extensions.get()) {

[Joao da Silva, 2014/10/15 14:39:26]

const auto&

[binjin, 2014/10/16 18:13:58]

Done.

+    if (!settings->IsPermissionSetAllowed(
+            extension->id(),
+            extension->permissions_data()->active_permissions())) {
+      extensions::PermissionsUpdater(profile()).RemovePermissions(

[Joao da Silva, 2014/10/15 14:39:26]

What happens in this case? If an extension is already running, is it disabled?

[binjin, 2014/10/16 18:13:58]

CheckManagementPolicy() will be called immediately below, and will unload all
extensions with conflicting required permissions.

I'm not sure about optional permissions, maybe we need to disable them manually,
a browser test might be necessary for this.

+          extension.get(),
+          settings->GetBlockedPermissions(extension->id()).get());
+    }
+  }
+
   CheckManagementPolicy();
 }
 
 void ExtensionService::AddNewOrUpdatedExtension(
     const Extension* extension,
     Extension::State initial_state,
     int install_flags,
     const syncer::StringOrdinal& page_ordinal,
     const std::string& install_parameter) {
   CHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 648 matching lines @@
 }
 
 void ExtensionService::OnProfileDestructionStarted() {
   ExtensionIdSet ids_to_unload = registry_->enabled_extensions().GetIDs();
   for (ExtensionIdSet::iterator it = ids_to_unload.begin();
        it != ids_to_unload.end();
        ++it) {
     UnloadExtension(*it, UnloadedExtensionInfo::REASON_PROFILE_SHUTDOWN);
   }
 }