Revert of move program descriptor generation to flush

src/gpu/GrProgramDesc.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 GrProgramDesc_DEFINED
 #define GrProgramDesc_DEFINED
 
@@ skipping 85 matching lines @@
     };
 
     struct KeyHeader {
         uint8_t                     fDstReadKey;   // set by GrGLShaderBuilder if there
                                                    // are effects that must read the dst.
                                                    // Otherwise, 0.
         uint8_t                     fFragPosKey;   // set by GrGLShaderBuilder if there are
                                                    // effects that read the fragment position.
                                                    // Otherwise, 0.
 
+        SkBool8                     fEmitsPointSize;
+
         ColorInput                  fColorInput : 8;
         ColorInput                  fCoverageInput : 8;
 
         PrimaryOutputType           fPrimaryOutputType : 8;
         SecondaryOutputType         fSecondaryOutputType : 8;
 
         SkBool8                     fHasGeometryProcessor;
         int8_t                      fColorEffectCnt;
         int8_t                      fCoverageEffectCnt;
     };
@@ skipping 79 matching lines @@
         kPreAllocSize = kHeaderOffset + kHeaderSize +
                         kMaxPreallocProcessors * sizeof(uint32_t) * kIntsPerProcessor,
     };
 
     SkSTArray<kPreAllocSize, uint8_t, true> fKey;
 
     friend class GrGLProgramDescBuilder;
 };
 
 #endif