Added ability to flush context to GrTextBlobCache

include/gpu/GrContext.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContext_DEFINED
 #define GrContext_DEFINED
 
@@ skipping 769 matching lines @@
      */
     const GrFragmentProcessor* createPMToUPMEffect(GrTexture*, bool swapRAndB, const SkMatrix&);
     const GrFragmentProcessor* createUPMToPMEffect(GrTexture*, bool swapRAndB, const SkMatrix&);
 
     /**
      *  This callback allows the resource cache to callback into the GrContext
      *  when the cache is still over budget after a purge.
      */
     static void OverBudgetCB(void* data);
 
+    /**
+     * A callback similar to the above for use by the TextBlobCache
+     * TODO move textblob draw calls below context so we can use the call above.
+     */
+    static void TextBlobCacheOverBudgetCB(void* data);
+
     // TODO see note on createTextContext
     friend class SkGpuDevice;
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif