Remove cached OptDrawState from GrDrawState.

src/gpu/GrOptDrawState.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 GrOptDrawState_DEFINED
 #define GrOptDrawState_DEFINED
 
 #include "GrColor.h"
 #include "GrGpu.h"
 #include "GrProcessorStage.h"
 #include "GrProgramDesc.h"
 #include "GrStencil.h"
 #include "GrTypesPriv.h"
 #include "SkMatrix.h"
 #include "SkRefCnt.h"
 
 class GrDeviceCoordTexture;
 class GrDrawState;
 
 /**
  * Class that holds an optimized version of a GrDrawState. It is meant to be an immutable class,
  * and contains all data needed to set the state for a gpu draw.
  */
 class GrOptDrawState : public SkRefCnt {
 public:
     /**
-     * Returns a snapshot of the current optimized state. If the current drawState has a valid
-     * cached optimiezed state it will simply return a pointer to it otherwise it will create a new
-     * GrOptDrawState. In all cases the GrOptDrawState is reffed and ownership is given to the
-     * caller.
+     * Returns a snapshot of the current optimized state. The GrOptDrawState is reffed and ownership
+     * is given to the caller.
      */
     static GrOptDrawState* Create(const GrDrawState& drawState, GrGpu*,
                                   const GrDeviceCoordTexture* dstCopy, GrGpu::DrawType drawType);
 
     bool operator== (const GrOptDrawState& that) const;
 
     ///////////////////////////////////////////////////////////////////////////
     /// @name Vertex Attributes
     ////
 
@@ skipping 347 matching lines @@
 
     GrProgramDesc fDesc;
 
     typedef SkRefCnt INHERITED;
 };
 
 GR_MAKE_BITFIELD_OPS(GrOptDrawState::BlendOptFlags);
 
 #endif