Create GrOptDrawState directly in the cmd buffer in GrIODB.

include/gpu/GrGpuResourceRef.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpuResourceRef_DEFINED
 #define GrGpuResourceRef_DEFINED
 
@@ skipping 59 matching lines @@
         writes to the resource using the program element or draw state. It can only be called once.
       */
     void removeRef() const;
 
     /** Called to indicate that the previous pending IO is complete. Useful when the owning object
         still has refs, so it is not about to destroy this GrGpuResourceRef, but its previously
         pending executions have been complete. Can only be called if removeRef() was not previously
         called. */
     void pendingIOComplete() const;
 
-    friend class GrDrawState;
-    friend class GrOptDrawState;
     friend class GrProgramElement;
 
     GrGpuResource*  fResource;
     mutable bool    fOwnRef;
     mutable bool    fPendingIO;
     GrIOType        fIOType;
 
     typedef SkNoncopyable INHERITED;
 };
 
@@ skipping 112 matching lines @@
                     fResource->completedRead();
                     fResource->completedWrite();
                     break;
             }
         }
     }
 
     T* fResource;
 };
 #endif