Introduce session type parameter to extension features

extensions/common/features/simple_feature.h

Index: extensions/common/features/simple_feature.h
diff --git a/extensions/common/features/simple_feature.h b/extensions/common/features/simple_feature.h
index d5d637820889e36b0676d179df0a53caf30a0813..3100139e07af4f5b2b4dd19b2ee780d4288d5b17 100644
--- a/extensions/common/features/simple_feature.h
+++ b/extensions/common/features/simple_feature.h
@@ -121,6 +121,7 @@ class SimpleFeature : public Feature {
   void set_contexts(std::initializer_list<Context> contexts);
   void set_dependencies(std::initializer_list<const char* const> dependencies);
   void set_extension_types(std::initializer_list<Manifest::Type> types);
+  void set_session_types(std::initializer_list<SessionType> types);
   void set_internal(bool is_internal) { is_internal_ = is_internal; }
   void set_location(Location location) { location_ = location; }
   // set_matches() is an exception to pass-by-value since we construct an
@@ -164,7 +165,8 @@ class SimpleFeature : public Feature {
                                      Manifest::Type type,
                                      const GURL& url,
                                      Context context,
-                                     version_info::Channel channel) const;
+                                     version_info::Channel channel,
+                                     SessionType session_type) const;
 
   // Handy utilities which construct the correct availability message.
   Availability CreateAvailability(AvailabilityResult result) const;
@@ -176,6 +178,8 @@ class SimpleFeature : public Feature {
                                   Context context) const;
   Availability CreateAvailability(AvailabilityResult result,
                                   version_info::Channel channel) const;
+  Availability CreateAvailability(AvailabilityResult result,
+                                  SessionType session_type) const;
 
  private:
   friend struct FeatureComparator;
@@ -189,6 +193,7 @@ class SimpleFeature : public Feature {
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, CommandLineSwitch);
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, ComplexFeatureAvailability);
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, Context);
+  FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, SessionType);
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, FeatureValidation);
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, HashedIdBlacklist);
   FRIEND_TEST_ALL_PREFIXES(SimpleFeatureTest, HashedIdWhitelist);
@@ -228,6 +233,7 @@ class SimpleFeature : public Feature {
   std::vector<std::string> whitelist_;
   std::vector<std::string> dependencies_;
   std::vector<Manifest::Type> extension_types_;
+  std::vector<SessionType> session_types_;
   std::vector<Context> contexts_;
   std::vector<Platform> platforms_;
   URLPatternSet matches_;