Support a "policy" extension location in extension features files. At the same

chrome/common/extensions/api/extension_api_unittest.cc

 // Copyright (c) 2012 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/extension_api.h"
 
 #include <string>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 688 matching lines @@
     SimpleFeature* feature = test_data[i].feature;
     ASSERT_TRUE(feature) << i;
 
     EXPECT_TRUE(feature->whitelist()->empty());
     EXPECT_TRUE(feature->extension_types()->empty());
 
     EXPECT_EQ(1u, feature->GetContexts()->size());
     EXPECT_TRUE(feature->GetContexts()->count(
         Feature::BLESSED_EXTENSION_CONTEXT));
 
-    EXPECT_EQ(Feature::UNSPECIFIED_LOCATION, feature->location());
+    EXPECT_TRUE(feature->locations()->empty());
     EXPECT_TRUE(feature->platforms()->empty());
     EXPECT_EQ(0, feature->min_manifest_version());
     EXPECT_EQ(0, feature->max_manifest_version());
   }
 }
 
 TEST(ExtensionAPITest, FeaturesRequireContexts) {
   // TODO(cduvall): Make this check API featues.
   scoped_ptr<base::DictionaryValue> api_features1(new base::DictionaryValue());
   scoped_ptr<base::DictionaryValue> api_features2(new base::DictionaryValue());
@@ skipping 170 matching lines @@
                                          extension.get(),
                                          Feature::BLESSED_EXTENSION_CONTEXT,
                                          GURL()).is_available());
   EXPECT_FALSE(extension_api->IsAvailable("pageAction",
                                           extension.get(),
                                           Feature::BLESSED_EXTENSION_CONTEXT,
                                           GURL()).is_available());
 }
 
 }  // namespace extensions