Make utility process run in-process when running in single-process mode.

content/utility/utility_thread_impl.h

Index: content/utility/utility_thread_impl.h
===================================================================
--- content/utility/utility_thread_impl.h	(revision 210446)
+++ content/utility/utility_thread_impl.h	(working copy)
@@ -26,6 +26,8 @@
                           public ChildThread {
  public:
   UtilityThreadImpl();
+  // Constructor that's used when running in single process mode.
+  explicit UtilityThreadImpl(const std::string& channel_name);
   virtual ~UtilityThreadImpl();
   virtual void Shutdown() OVERRIDE;
 
@@ -37,6 +39,8 @@
 #endif
 
  private:
+  void Init();
+
   // ChildThread implementation.
   virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;
 
@@ -51,6 +55,9 @@
   // True when we're running in batch mode.
   bool batch_mode_;
 
+  // True if running in single process mode.
+  bool single_process_;
+
   scoped_ptr<WebKitPlatformSupportImpl> webkit_platform_support_;
 
   DISALLOW_COPY_AND_ASSIGN(UtilityThreadImpl);