Revert of Revert "Revert of Moving gRPC support interfaces out of cronet and into a new component. (patchset …

components/cronet/ios/cronet_environment.h

Index: components/cronet/ios/cronet_environment.h
diff --git a/components/cronet/ios/cronet_environment.h b/components/cronet/ios/cronet_environment.h
index 95b4db207f88edcc04e18fcedecd40cb2782fa37..6afde9cb6236346fda0a17db616f6ee6375e1e88 100644
--- a/components/cronet/ios/cronet_environment.h
+++ b/components/cronet/ios/cronet_environment.h
@@ -44,8 +44,8 @@
   static void Initialize();
 
   // |user_agent| will be used to generate the user-agent if
-  // |user_agent_partial| is true, or will be used as the complete user-agent
-  // otherwise.
+  // |user_agent_partial|
+  // is true, or will be used as complete user-agent otherwise.
   CronetEnvironment(const std::string& user_agent, bool user_agent_partial);
   ~CronetEnvironment();
 
@@ -84,25 +84,27 @@
     cert_verifier_ = std::move(cert_verifier);
   }
 
-  void SetHostResolverRules(const std::string& host_resolver_rules);
+  void set_host_resolver_rules(const std::string& host_resolver_rules) {
+    host_resolver_rules_ = host_resolver_rules;
+  }
 
   void set_ssl_key_log_file_name(const std::string& ssl_key_log_file_name) {
     ssl_key_log_file_name_ = ssl_key_log_file_name;
   }
 
-  // Returns the URLRequestContext associated with this object.
   net::URLRequestContext* GetURLRequestContext() const;
 
-  // Return the URLRequestContextGetter associated with this object.
   net::URLRequestContextGetter* GetURLRequestContextGetter() const;
+
+  bool IsOnNetworkThread();
+
+  // Runs a closure on the network thread.
+  void PostToNetworkThread(const tracked_objects::Location& from_here,
+                           const base::Closure& task);
 
  private:
   // Performs initialization tasks that must happen on the network thread.
   void InitializeOnNetworkThread();
-
-  // Runs a closure on the network thread.
-  void PostToNetworkThread(const tracked_objects::Location& from_here,
-                           const base::Closure& task);
 
   // Runs a closure on the file user blocking thread.
   void PostToFileUserBlockingThread(const tracked_objects::Location& from_here,
@@ -118,13 +120,10 @@
   net::HttpNetworkSession* GetHttpNetworkSession(
       net::URLRequestContext* context);
 
-  // Sets host resolver rules on the network_io_thread_.
-  void SetHostResolverRulesOnNetworkThread(const std::string& rules,
-                                           base::WaitableEvent* event);
-
   bool http2_enabled_;
   bool quic_enabled_;
   std::string accept_language_;
+  std::string host_resolver_rules_;
   std::string ssl_key_log_file_name_;
 
   std::list<net::HostPortPair> quic_hints_;