Add abliity to set textblob cache budget to GrContext

include/gpu/GrContext.h

Index: include/gpu/GrContext.h
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index c4691e4652e6c811755a8ca23abb54ac4949075d..058c558cc5ceca09be5b8151c30d4176c30c9fe9 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -137,6 +137,13 @@ public:
      */
     void setResourceCacheLimits(int maxResources, size_t maxResourceBytes);
 
+    /**
+     *  Specify the TextBlob cache limit. If the current cache exceeds this limit it will purge.
+     *
+     *  @param bytes The maximum number of bytes of cpu memory that can be held in the cache
+     */
+    void setTextBlobCacheLimit(size_t bytes);

[bsalomon, 2015/08/03 15:28:30]

Is this just needed for testing? Seems like an odd knob for our clients to use.

+
     GrTextureProvider* textureProvider() { return fTextureProvider; }
     const GrTextureProvider* textureProvider() const { return fTextureProvider; }