Rein in the use of SkDevice.h

gm/extractbitmap.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "gm.h"
 #include "SkBitmap.h"
 #include "SkCanvas.h"
-#include "SkDevice.h"
 #include "SkString.h"
 #include "SkSurface.h"
 
 namespace skiagm {
 
 static void create_bitmap(SkBitmap* bitmap) {
     const int W = 100;
     const int H = 100;
     bitmap->allocN32Pixels(W, H);
 
@@ skipping 55 matching lines @@
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ExtractBitmapGM; }
 static GMRegistry reg(MyFactory);
 
 }