Move core features code to //extensions

chrome/common/extensions/features/manifest_feature.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 "chrome/common/extensions/features/manifest_feature.h"
-
-#include "extensions/common/manifest.h"
-
-namespace extensions {
-
-ManifestFeature::ManifestFeature() {
-}
-
-ManifestFeature::~ManifestFeature() {
-}
-
-Feature::Availability ManifestFeature::IsAvailableToContext(
-    const Extension* extension,
-    Feature::Context context,
-    const GURL& url,
-    Feature::Platform platform) const {
-  Availability availability = SimpleFeature::IsAvailableToContext(extension,
-                                                                  context,
-                                                                  url,
-                                                                  platform);
-  if (!availability.is_available())
-    return availability;
-
-  // We know we can skip manifest()->GetKey() here because we just did the same
-  // validation it would do above.
-  if (extension && !extension->manifest()->value()->HasKey(name()))
-    return CreateAvailability(NOT_PRESENT, extension->GetType());
-
-  return CreateAvailability(IS_AVAILABLE);
-}
-
-std::string ManifestFeature::Parse(const base::DictionaryValue* value) {
-  std::string error = SimpleFeature::Parse(value);
-  if (!error.empty())
-    return error;
-
-  if (extension_types()->empty()) {
-    return name() + ": Manifest features must specify at least one " +
-        "value for extension_types.";
-  }
-
-  if (!GetContexts()->empty())
-    return name() + ": Manifest features do not support contexts.";
-
-  return std::string();
-}
-
-}  // namespace extensions