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 dbcb9a6583321d715a437a9982c7da7b5521066e..fa7b74b5a4d45b1743a4104d3d1a444db58810ab 100644
--- a/include/gpu/GrTypes.h
+++ b/include/gpu/GrTypes.h
@@ -432,7 +432,8 @@ struct GrSurfaceDesc {
     , fWidth(0)
     , fHeight(0)
     , fConfig(kUnknown_GrPixelConfig)
-    , fSampleCnt(0) {
+    , fSampleCnt(0)
+    , fIsMipMapped(false) {
     }
 
     GrSurfaceFlags         fFlags;  //!< bitfield of TextureFlags
@@ -454,6 +455,8 @@ struct GrSurfaceDesc {
      * max supported count.
      */
     int                    fSampleCnt;
+
+    bool                   fIsMipMapped; //!< Indicates if the texture has mipmaps
 };
 
 // Legacy alias