Add a function to scroll a platform canvas. This uses the platform scroll...

gfx/gfx.gyp

 # Copyright (c) 2009 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'gfx_unittests',
       'type': 'executable',
       'msvs_guid': 'C8BD2821-EAE5-4AC6-A0E4-F82CAC2956CC',
       'dependencies': [
         'gfx',
         '../skia/skia.gyp:skia',
         '../testing/gtest.gyp:gtest',
       ],
       'sources': [
+        'blit_unittest.cc',
         'codec/jpeg_codec_unittest.cc',
         'codec/png_codec_unittest.cc',
         'color_utils_unittest.cc',
         'font_unittest.cc',
         'insets_unittest.cc',
         'rect_unittest.cc',
         'run_all_unittests.cc',
         'skbitmap_operations_unittest.cc',
         'test_suite.h',
       ],
@@ skipping 125 matching lines @@
       ],
     },    
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: