Allow custom resources in the GrContext's cache

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 881 matching lines @@
     GrStencilBuffer* findStencilBuffer(int width, int height, int sampleCnt);
 
     GrPathRenderer* getPathRenderer(
                     const SkPath& path,
                     const SkStrokeRec& stroke,
                     const GrDrawTarget* target,
                     bool allowSW,
                     GrPathRendererChain::DrawType drawType = GrPathRendererChain::kColor_DrawType,
                     GrPathRendererChain::StencilSupport* stencilSupport = NULL);
 
+    /**
+     * Stores a custom resource in the cache, based on the specified key.
+     */
+    void addResourceToCache(const GrResourceKey&, GrCacheable*);
+
+    /**
+     * Finds a resource in the cache, based on the specified key. This is intended for use in
+     * conjunction with addResourceToCache(). The return value will be NULL if not found. The
+     * caller must balance with a call to unref().
+     */
+    GrCacheable* findAndRefCachedResource(const GrResourceKey&);
 
 #if GR_CACHE_STATS
     void printCacheStats() const;
 #endif
 
 private:
     // Used to indicate whether a draw should be performed immediately or queued in fDrawBuffer.
     enum BufferedDraw {
         kYes_BufferedDraw,
         kNo_BufferedDraw,
@@ skipping 177 matching lines @@
     }
 
     GrTexture* texture() { return fTexture; }
 
 private:
     GrContext*                    fContext;
     GrTexture*                    fTexture;
 };
 
 #endif