Constify the arguments to createTexture

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 195 matching lines @@
      * @param desc      Description of the texture properties.
      * @param cacheID Cache-specific properties (e.g., texture gen ID)
      * @param srcData   Pointer to the pixel values.
      * @param rowBytes  The number of bytes between rows of the texture. Zero
      *                  implies tightly packed rows.
      * @param cacheKey  (optional) If non-NULL, we'll write the cache key we used to cacheKey.
      */
     GrTexture* createTexture(const GrTextureParams* params,
                              const GrTextureDesc& desc,
                              const GrCacheID& cacheID,
-                             void* srcData,
+                             const void* srcData,
                              size_t rowBytes,
                              GrResourceKey* cacheKey = NULL);
 
     /**
      * Search for an entry based on key and dimensions. If found, ref it and return it. The return
      * value will be NULL if not found. The caller must balance with a call to unref.
      *
      *  @param desc     Description of the texture properties.
      *  @param cacheID Cache-specific properties (e.g., texture gen ID)
      *  @param params   The texture params used to draw a texture may help determine
@@ skipping 766 matching lines @@
     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*, BufferedDraw, AutoRestoreEffects*, AutoCheckFlush*);
 
     void internalDrawPath(GrDrawTarget* target, bool useAA, const SkPath& path,
                           const SkStrokeRec& stroke);
 
     GrTexture* createResizedTexture(const GrTextureDesc& desc,
                                     const GrCacheID& cacheID,
-                                    void* srcData,
+                                    const void* srcData,
                                     size_t rowBytes,
                                     bool filter);
 
     // Needed so GrTexture's returnToCache helper function can call
     // addExistingTextureToCache
     friend class GrTexture;
     friend class GrStencilAndCoverPathRenderer;
 
     // Add an existing texture to the texture cache. This is intended solely
     // for use with textures released from an GrAutoScratchTexture.
@@ skipping 109 matching lines @@
     }
 
     GrTexture* texture() { return fTexture; }
 
 private:
     GrContext*                    fContext;
     GrTexture*                    fTexture;
 };
 
 #endif