Introduce lock screen app context to extension features

extensions/common/features/simple_feature_unittest.cc

 // Copyright 2014 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 "extensions/common/features/simple_feature.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 369 matching lines @@
   feature.set_location(SimpleFeature::COMPONENT_LOCATION);
   EXPECT_EQ(Feature::INVALID_LOCATION, feature.IsAvailableToContext(
       extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
       Feature::CHROMEOS_PLATFORM).result());
   feature.set_location(SimpleFeature::UNSPECIFIED_LOCATION);
 
   EXPECT_EQ(Feature::INVALID_PLATFORM, feature.IsAvailableToContext(
       extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
       Feature::UNSPECIFIED_PLATFORM).result());
 
+  feature.contexts_.clear();
+  feature.contexts_.push_back(Feature::BLESSED_EXTENSION_CONTEXT);
+
+  {
+    Feature::Availability availability = feature.IsAvailableToContext(
+        extension.get(), Feature::LOCK_SCREEN_EXTENSION_CONTEXT,
+        Feature::CHROMEOS_PLATFORM);
+    EXPECT_EQ(Feature::INVALID_CONTEXT, availability.result());
+    EXPECT_EQ(
+        "'somefeature' is only allowed to run in privileged pages, "
+        "but this is a lock screen app",
+        availability.message());
+  }
+
+  feature.contexts_.clear();
+  feature.contexts_.push_back(Feature::LOCK_SCREEN_EXTENSION_CONTEXT);
+
+  EXPECT_EQ(Feature::IS_AVAILABLE,
+            feature
+                .IsAvailableToContext(extension.get(),
+                                      Feature::LOCK_SCREEN_EXTENSION_CONTEXT,
+                                      Feature::CHROMEOS_PLATFORM)
+                .result());
+
   feature.set_min_manifest_version(22);
   EXPECT_EQ(Feature::INVALID_MIN_MANIFEST_VERSION, feature.IsAvailableToContext(
       extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
       Feature::CHROMEOS_PLATFORM).result());
   feature.set_min_manifest_version(21);
 
   feature.set_max_manifest_version(18);
   EXPECT_EQ(Feature::INVALID_MAX_MANIFEST_VERSION, feature.IsAvailableToContext(
       extension.get(), Feature::BLESSED_EXTENSION_CONTEXT,
       Feature::CHROMEOS_PLATFORM).result());
@@ skipping 484 matching lines @@
     ScopedCurrentChannel current_channel(Channel::BETA);
     EXPECT_EQ(Feature::UNSUPPORTED_CHANNEL,
               feature
                   .IsAvailableToContext(nullptr, Feature::WEBUI_CONTEXT,
                                         kWhitelistedUrl)
                   .result());
   }
 }
 
 }  // namespace extensions