Make HasRepresentation() work better for vector images.

ui/gfx/gfx.gyp

 # Copyright (c) 2013 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': [
     {
@@ skipping 183 matching lines @@
         'image/image_ios.mm',
         'image/image_mac.mm',
         'image/image_png_rep.cc',
         'image/image_png_rep.h',
         'image/image_skia.cc',
         'image/image_skia.h',
         'image/image_skia_operations.cc',
         'image/image_skia_operations.h',
         'image/image_skia_rep.cc',
         'image/image_skia_rep.h',
+        'image/image_skia_source.cc',
         'image/image_skia_source.h',
         'image/image_skia_util_ios.h',
         'image/image_skia_util_ios.mm',
         'image/image_skia_util_mac.h',
         'image/image_skia_util_mac.mm',
         'image/image_util.cc',
         'image/image_util.h',
         'image/image_util_ios.mm',
         'interpolated_transform.cc',
         'interpolated_transform.h',
@@ skipping 365 matching lines @@
          ],
          'variables': {
            'jni_gen_package': 'ui/gfx',
          },
          'includes': [ '../../build/jni_generator.gypi' ],
        },
      ],
     }],
   ],
 }