Add abliity to set textblob cache budget to GrContext

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 335 matching lines @@
                     GrPathRendererChain::StencilSupport* stencilSupport = NULL);
 
     /** Prints cache stats to the string if GR_CACHE_STATS == 1. */
     void dumpCacheStats(SkString*) const;
     void printCacheStats() const;
 
     /** Prints GPU stats to the string if GR_GPU_STATS == 1. */
     void dumpGpuStats(SkString*) const;
     void printGpuStats() const;
 
+    /** Specify the TextBlob cache limit. If the current cache exceeds this limit it will purge.
+        this is for testing only */
+    void setTextBlobCacheLimit_ForTesting(size_t bytes);
+
 private:
     GrGpu*                          fGpu;
     const GrCaps*                   fCaps;
     GrResourceCache*                fResourceCache;
     // this union exists because the inheritance of GrTextureProvider->GrResourceProvider
     // is in a private header.
     union {
         GrResourceProvider*         fResourceProvider;
         GrTextureProvider*          fTextureProvider;
     };
@@ skipping 92 matching lines @@
     /**
      * 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);
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif