Introduce ChannelMojo

content/child/child_thread.h

Index: content/child/child_thread.h
diff --git a/content/child/child_thread.h b/content/child/child_thread.h
index 8bad5ef0c91dbfc8bb37126fb81b6f28e93b0b8b..88b52abecde5395c969997ce871c2705315c5ac7 100644
--- a/content/child/child_thread.h
+++ b/content/child/child_thread.h
@@ -53,10 +53,20 @@ struct RequestInfo;
 // The main thread of a child process derives from this class.
 class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
  public:
+  struct CONTENT_EXPORT Options {
+    Options();
+    explicit Options(bool mojo);
+    Options(std::string name, bool mojo)
+        : channel_name(name), use_mojo_channel(mojo) {}
+
+    std::string channel_name;
+    bool use_mojo_channel;
+  };
+
   // Creates the thread.
   ChildThread();
   // Used for single-process mode and for in process gpu mode.
-  explicit ChildThread(const std::string& channel_name);
+  explicit ChildThread(const Options& options);
   // ChildProcess::main_thread() is reset after Shutdown(), and before the
   // destructor, so any subsystem that relies on ChildProcess::main_thread()
   // must be terminated before Shutdown returns. In particular, if a subsystem
@@ -173,7 +183,8 @@ class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
     IPC::Sender* const sender_;
   };
 
-  void Init();
+  void Init(const Options& options);
+  scoped_ptr<IPC::SyncChannel> CreateChannel(bool use_mojo_channel);
 
   // IPC message handlers.
   void OnShutdown();