Implement ComplexFeature to support permission features with multiple rules.

chrome/common/extensions/features/simple_feature.cc

Index: chrome/common/extensions/features/simple_feature.cc
diff --git a/chrome/common/extensions/features/feature.cc b/chrome/common/extensions/features/simple_feature.cc
similarity index 87%
copy from chrome/common/extensions/features/feature.cc
copy to chrome/common/extensions/features/simple_feature.cc
index 8e4bb64fba90576b50a64ec32e71d0e95d8cc7c8..e711d12b2e9808a5001db0d217d096aec5df08cb 100644
--- a/chrome/common/extensions/features/feature.cc
+++ b/chrome/common/extensions/features/simple_feature.cc
@@ -2,14 +2,15 @@
 // 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/feature.h"
+#include "chrome/common/extensions/features/simple_feature.h"
 
 #include <map>
+#include <vector>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
-#include "base/stringprintf.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "chrome/common/chrome_switches.h"
 
 using chrome::VersionInfo;
@@ -64,9 +65,6 @@ std::string GetChannelName(VersionInfo::Channel channel) {
   return "unknown";
 }
 
-const VersionInfo::Channel kDefaultChannel = VersionInfo::CHANNEL_STABLE;
-VersionInfo::Channel g_current_channel = kDefaultChannel;
-
 // TODO(aa): Can we replace all this manual parsing with JSON schema stuff?
 
 void ParseSet(const DictionaryValue* value,
@@ -164,7 +162,7 @@ std::string GetDisplayTypeName(Extension::Type type) {
 
 namespace extensions {
 
-Feature::Feature()
+SimpleFeature::SimpleFeature()
   : location_(UNSPECIFIED_LOCATION),
     platform_(UNSPECIFIED_PLATFORM),
     min_manifest_version_(0),
@@ -172,7 +170,7 @@ Feature::Feature()
     channel_(VersionInfo::CHANNEL_UNKNOWN) {
 }
 
-Feature::Feature(const Feature& other)
+SimpleFeature::SimpleFeature(const SimpleFeature& other)
     : whitelist_(other.whitelist_),
       extension_types_(other.extension_types_),
       contexts_(other.contexts_),
@@ -183,10 +181,10 @@ Feature::Feature(const Feature& other)
       channel_(other.channel_) {
 }
 
-Feature::~Feature() {
+SimpleFeature::~SimpleFeature() {
 }
 
-bool Feature::Equals(const Feature& other) const {
+bool SimpleFeature::Equals(const SimpleFeature& other) const {
   return whitelist_ == other.whitelist_ &&
       extension_types_ == other.extension_types_ &&
       contexts_ == other.contexts_ &&
@@ -197,24 +195,7 @@ bool Feature::Equals(const Feature& other) const {
       channel_ == other.channel_;
 }
 
-// static
-Feature::Platform Feature::GetCurrentPlatform() {
-#if defined(OS_CHROMEOS)
-  return CHROMEOS_PLATFORM;
-#else
-  return UNSPECIFIED_PLATFORM;
-#endif
-}
-
-// static
-Feature::Location Feature::ConvertLocation(Extension::Location location) {
-  if (location == Extension::COMPONENT)
-    return COMPONENT_LOCATION;
-  else
-    return UNSPECIFIED_LOCATION;
-}
-
-void Feature::Parse(const DictionaryValue* value) {
+void SimpleFeature::Parse(const DictionaryValue* value) {
   ParseSet(value, "whitelist", &whitelist_);
   ParseEnumSet<Extension::Type>(value, "extension_types", &extension_types_,
                                 g_mappings.Get().extension_types);
@@ -231,7 +212,7 @@ void Feature::Parse(const DictionaryValue* value) {
       g_mappings.Get().channels);
 }
 
-Feature::Availability Feature::IsAvailableToManifest(
+Feature::Availability SimpleFeature::IsAvailableToManifest(
     const std::string& extension_id,
     Extension::Type type,
     Location location,
@@ -274,16 +255,16 @@ Feature::Availability Feature::IsAvailableToManifest(
   if (max_manifest_version_ != 0 && manifest_version > max_manifest_version_)
     return CreateAvailability(INVALID_MAX_MANIFEST_VERSION, type);
 
-  if (channel_ < g_current_channel)
+  if (channel_ <  Feature::GetCurrentChannel())
     return CreateAvailability(UNSUPPORTED_CHANNEL, type);
 
   return CreateAvailability(IS_AVAILABLE, type);
 }
 
-Feature::Availability Feature::IsAvailableToContext(
+Feature::Availability SimpleFeature::IsAvailableToContext(
     const Extension* extension,
-    Feature::Context context,
-    Feature::Platform platform) const {
+    SimpleFeature::Context context,
+    SimpleFeature::Platform platform) const {
   Availability result = IsAvailableToManifest(
       extension->id(),
       extension->GetType(),
@@ -301,33 +282,7 @@ Feature::Availability Feature::IsAvailableToContext(
   return CreateAvailability(IS_AVAILABLE);
 }
 
-// static
-chrome::VersionInfo::Channel Feature::GetCurrentChannel() {
-  return g_current_channel;
-}
-
-// static
-void Feature::SetCurrentChannel(VersionInfo::Channel channel) {
-  g_current_channel = channel;
-}
-
-// static
-chrome::VersionInfo::Channel Feature::GetDefaultChannel() {
-  return kDefaultChannel;
-}
-
-Feature::Availability Feature::CreateAvailability(
-    AvailabilityResult result) const {
-  return Availability(
-      result, GetAvailabilityMessage(result, Extension::TYPE_UNKNOWN));
-}
-
-Feature::Availability Feature::CreateAvailability(
-    AvailabilityResult result, Extension::Type type) const {
-  return Availability(result, GetAvailabilityMessage(result, type));
-}
-
-std::string Feature::GetAvailabilityMessage(
+std::string SimpleFeature::GetAvailabilityMessage(
     AvailabilityResult result, Extension::Type type) const {
   switch (result) {
     case IS_AVAILABLE:
@@ -398,5 +353,4 @@ std::string Feature::GetAvailabilityMessage(
   return "";
 }
 
-
 }  // namespace extensions