Move 'mustRegenerate' function into GrAtlasTextBlob

src/gpu/GrAtlasTextBlob.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrAtlasTextBlob_DEFINED
 #define GrAtlasTextBlob_DEFINED
 
@@ skipping 282 matching lines @@
         switch (maskFormat) {
             case kA8_GrMaskFormat:
                 return kGrayTextVASize;
             case kARGB_GrMaskFormat:
                 return kColorTextVASize;
             default:
                 return kLCDTextVASize;
         }
     }
 
+    bool mustRegenerate(SkScalar* outTransX, SkScalar* outTransY, const SkPaint& paint,
+                        GrColor color, const SkMaskFilter::BlurRec& blurRec,
+                        const SkMatrix& viewMatrix, SkScalar x, SkScalar y);
+
     // position + local coord
     static const size_t kColorTextVASize = sizeof(SkPoint) + sizeof(SkIPoint16);
     static const size_t kGrayTextVASize = sizeof(SkPoint) + sizeof(GrColor) + sizeof(SkIPoint16);
     static const size_t kLCDTextVASize = kGrayTextVASize;
     static const int kVerticesPerGlyph = 4;
 
 #ifdef CACHE_SANITY_CHECK
     static void AssertEqual(const GrAtlasTextBlob&, const GrAtlasTextBlob&);
     size_t fSize;
 #endif
 };
 
 #endif