Creating functions for uploading a mipmapped texture.

include/gpu/GrTypes.h

Index: include/gpu/GrTypes.h
diff --git a/include/gpu/GrTypes.h b/include/gpu/GrTypes.h
index 8a8e08c949910c0b60f5932d5bb817e54acdbe10..774394fcb145d488a030d32e89d47dbb2d691aae 100644
--- a/include/gpu/GrTypes.h
+++ b/include/gpu/GrTypes.h
@@ -452,7 +452,8 @@ struct GrSurfaceDesc {
     , fWidth(0)
     , fHeight(0)
     , fConfig(kUnknown_GrPixelConfig)
-    , fSampleCnt(0) {
+    , fSampleCnt(0)
+    , fIsMipMapped(false) {
     }
 
     GrSurfaceFlags         fFlags;  //!< bitfield of TextureFlags
@@ -474,6 +475,8 @@ struct GrSurfaceDesc {
      * max supported count.
      */
     int                    fSampleCnt;
+
+    bool                   fIsMipMapped; //!< Indicates if the texture has mipmaps
 };
 
 // Legacy alias