Add mock context and use in ResourceCacheTest.

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 45 matching lines @@
         // May be removed in the future, or may become standard depending
         // on the outcomes of a variety of internal tests.
         bool fDrawPathToCompressedTexture;
     };
 
     /**
      * Creates a GrContext for a backend context.
      */
     static GrContext* Create(GrBackend, GrBackendContext, const Options* opts = NULL);
 
+    /**
+     * Only defined in test apps.
+     */
+    static GrContext* CreateMockContext();
+
     virtual ~GrContext();
 
     /**
      * The GrContext normally assumes that no outsider is setting state
      * within the underlying 3D API's context/device/whatever. This call informs
      * the context that the state was modified and it should resend. Shouldn't
      * be called frequently for good performance.
      * The flag bits, state, is dpendent on which backend is used by the
      * context, either GL or D3D (possible in future).
      */
@@ skipping 895 matching lines @@
     };
 
     SkTDArray<CleanUpData>          fCleanUpData;
 
     int                             fMaxTextureSizeOverride;
 
     const Options                   fOptions;
 
     GrContext(const Options&); // init must be called after the constructor.
     bool init(GrBackend, GrBackendContext);
+    void initMockContext();
+    void initCommon();
 
     void setupDrawBuffer();
 
     class AutoRestoreEffects;
     class AutoCheckFlush;
     /// Sets the paint and returns the target to draw into. The paint can be NULL in which case the
     /// draw state is left unmodified.
     GrDrawTarget* prepareToDraw(const GrPaint*, AutoRestoreEffects*, AutoCheckFlush*);
 
     void internalDrawPath(GrDrawTarget* target, bool useAA, const SkPath& path,
@@ skipping 18 matching lines @@
     /**
      *  This callback allows the resource cache to callback into the GrContext
      *  when the cache is still overbudget after a purge.
      */
     static bool OverbudgetCB(void* data);
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif