[Extensions] Move Feature channel code into //extensions

chrome/common/extensions/features/chrome_channel_feature_filter.cc

Index: chrome/common/extensions/features/chrome_channel_feature_filter.cc
diff --git a/chrome/common/extensions/features/chrome_channel_feature_filter.cc b/chrome/common/extensions/features/chrome_channel_feature_filter.cc
deleted file mode 100644
index 3613f87243cc93856a20f9e855d99eb893f04eb9..0000000000000000000000000000000000000000
--- a/chrome/common/extensions/features/chrome_channel_feature_filter.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-// 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 "chrome/common/extensions/features/chrome_channel_feature_filter.h"
-
-#include <map>
-#include <string>
-
-#include "base/lazy_instance.h"
-#include "base/strings/stringprintf.h"
-#include "chrome/common/extensions/features/feature_channel.h"
-#include "chrome/grit/chromium_strings.h"
-#include "components/version_info/version_info.h"
-#include "extensions/common/features/simple_feature.h"
-#include "ui/base/l10n/l10n_util.h"
-
-namespace extensions {
-
-namespace {
-
-static const char kFeatureChannelKey[] = "channel";
-
-struct Mappings {
-  Mappings() {
-    channels["trunk"] = version_info::Channel::UNKNOWN;
-    channels["canary"] = version_info::Channel::CANARY;
-    channels["dev"] = version_info::Channel::DEV;
-    channels["beta"] = version_info::Channel::BETA;
-    channels["stable"] = version_info::Channel::STABLE;
-  }
-
-  std::map<std::string, version_info::Channel> channels;
-};
-
-base::LazyInstance<Mappings> g_mappings = LAZY_INSTANCE_INITIALIZER;
-
-std::string GetChannelName(version_info::Channel channel) {
-  typedef std::map<std::string, version_info::Channel> ChannelsMap;
-  ChannelsMap channels = g_mappings.Get().channels;
-  for (ChannelsMap::iterator i = channels.begin(); i != channels.end(); ++i) {
-    if (i->second == channel)
-      return i->first;
-  }
-  NOTREACHED();
-  return "unknown";
-}
-
-version_info::Channel GetChannelValue(const std::string& name) {
-  typedef std::map<std::string, version_info::Channel> ChannelsMap;
-  ChannelsMap channels = g_mappings.Get().channels;
-  ChannelsMap::const_iterator iter = channels.find(name);
-  CHECK(iter != channels.end());
-  return iter->second;
-}
-
-}  // namespace
-
-ChromeChannelFeatureFilter::ChromeChannelFeatureFilter(SimpleFeature* feature)
-    : SimpleFeatureFilter(feature),
-      channel_has_been_set_(false),
-      channel_(version_info::Channel::UNKNOWN) {}
-
-ChromeChannelFeatureFilter::~ChromeChannelFeatureFilter() {}
-
-std::string ChromeChannelFeatureFilter::Parse(
-    const base::DictionaryValue* value) {
-  std::string channel_name;
-  if (value->GetString(kFeatureChannelKey, &channel_name)) {
-    channel_ = GetChannelValue(channel_name);
-  }
-
-  // The "trunk" channel uses version_info::Channel::UNKNOWN, so we need to keep
-  // track of whether the channel has been set or not separately.
-  channel_has_been_set_ |= value->HasKey(kFeatureChannelKey);
-
-  if (!channel_has_been_set_ && !feature()->HasDependencies()) {
-    return feature()->name() +
-           ": Must supply a value for channel or dependencies.";
-  }
-
-  return std::string();
-}
-
-Feature::Availability ChromeChannelFeatureFilter::IsAvailableToManifest(
-    const std::string& extension_id,
-    Manifest::Type type,
-    Manifest::Location location,
-    int manifest_version,
-    Feature::Platform platfortm) const {
-  if (channel_has_been_set_ && channel_ < GetCurrentChannel()) {
-    return Feature::Availability(
-        Feature::UNSUPPORTED_CHANNEL,
-        base::StringPrintf(
-            "'%s' requires %s %s channel or newer, but this is the %s channel.",
-            feature()->name().c_str(),
-            l10n_util::GetStringUTF8(IDS_PRODUCT_NAME).c_str(),
-            GetChannelName(channel_).c_str(),
-            GetChannelName(GetCurrentChannel()).c_str()));
-  }
-  return Feature::Availability(Feature::IS_AVAILABLE, std::string());
-}
-
-}  // namespace extensions