Initial work to get ETC1 data up to the GPU

include/gpu/GrContext.h

Index: include/gpu/GrContext.h
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index b28c444edc37d76118127c19d3fc6b68e4ce46f2..663fd4e9f41d8dcfcd30efd8c8d5a1a2a225775c 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -216,7 +216,26 @@ public:
                              void* srcData,
                              size_t rowBytes,
                              GrResourceKey* cacheKey = NULL);
-
+    /**
+     * Creates a new entry, based on the specified key and texture and returns it. The caller owns a
+     * ref on the returned texture which must be balanced by a call to unref.
+     *
+     * @param params    The texture params used to draw a texture may help determine
+     *                  the cache entry used. (e.g. different versions may exist
+     *                  for different wrap modes on GPUs with limited NPOT
+     *                  texture support). NULL implies clamp wrap modes.
+     * @param desc      Description of the texture properties.
+     * @param cacheID   Cache-specific properties (e.g., texture gen ID)
+     * @param srcData   Pointer to the compressed pixel values.
+     * @param format    The compressed texture format to use
+     * @param cacheKey  (optional) If non-NULL, we'll write the cache key we used to cacheKey.
+     */
+    GrTexture* createCompressedTexture(const GrTextureParams* params,
+                                       const GrTextureDesc& desc,
+                                       const GrCacheID& cacheID,
+                                       const void* srcData,
+                                       GrCompressedFormat format,
+                                       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.