small cleanup of GrAtlas

src/gpu/GrDrawTarget.h

Index: src/gpu/GrDrawTarget.h
diff --git a/src/gpu/GrDrawTarget.h b/src/gpu/GrDrawTarget.h
index e0b96b2a3bfe4ea4a506fc9e64fd53590e8b81f2..a5e3b8efee3eb852dcb705bef5ae5281bd892036 100644
--- a/src/gpu/GrDrawTarget.h
+++ b/src/gpu/GrDrawTarget.h
@@ -202,23 +202,6 @@ public:
      */
     virtual void purgeResources() {};
 
-    ///////////////////////////////////////////////////////////////////////////
-    // Draw execution tracking (for font atlases and other resources)
-    class DrawToken {
-    public:
-        DrawToken(GrDrawTarget* drawTarget, uint32_t drawID) :
-                  fDrawTarget(drawTarget), fDrawID(drawID) {}
-
-        bool isIssued() { return fDrawTarget && fDrawTarget->isIssued(fDrawID); }
-
-    private:
-        GrDrawTarget*  fDrawTarget;
-        uint32_t       fDrawID;   // this may wrap, but we're doing direct comparison
-                                  // so that should be okay
-    };
-
-    virtual DrawToken getCurrentDrawToken() { return DrawToken(this, 0); }
-
     bool programUnitTest(int maxStages);
 
 protected: