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

extensions/common/features/complex_feature.cc

Index: extensions/common/features/complex_feature.cc
diff --git a/extensions/common/features/complex_feature.cc b/extensions/common/features/complex_feature.cc
index aa6e71b28417dabe6ccaf2e5a533a7e2ba796b53..ae7327cf174dcce8626c06ac4c241ac73716be8c 100644
--- a/extensions/common/features/complex_feature.cc
+++ b/extensions/common/features/complex_feature.cc
@@ -37,8 +37,11 @@ ComplexFeature::~ComplexFeature() {
 }
 
 Feature::Availability ComplexFeature::IsAvailableToManifest(
-    const std::string& extension_id, Manifest::Type type, Location location,
-    int manifest_version, Platform platform) const {
+    const std::string& extension_id,
+    Manifest::Type type,
+    Manifest::Location location,
+    int manifest_version,
+    Platform platform) const {
   Feature::Availability first_availability =
       features_[0]->IsAvailableToManifest(
           extension_id, type, location, manifest_version, platform);