PdfMetafileSkia gives out a SkCanvas, not a SkBaseDevice.

skia/skia_chrome.gypi

 # Copyright 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.
 
 
 # This gypi file contains all the Chrome-specific enhancements to Skia.
 # In component mode (shared_lib) it is folded into a single shared library with
 # the Skia files but in all other cases it is a separate library.
 {
   'dependencies': [
@@ skipping 65 matching lines @@
     'ext/skia_utils_base.h',
     'ext/skia_utils_ios.mm',
     'ext/skia_utils_ios.h',
     'ext/skia_utils_mac.mm',
     'ext/skia_utils_mac.h',
     'ext/skia_utils_win.cc',
     'ext/skia_utils_win.h',
     'ext/vector_canvas.h',
     'ext/vector_platform_device_emf_win.cc',
     'ext/vector_platform_device_emf_win.h',
-    'ext/vector_platform_device_skia.cc',
-    'ext/vector_platform_device_skia.h',
   ],
   'conditions': [
     [ 'OS == "android" and enable_printing == 0', {
       'sources!': [
         'ext/skia_utils_base.cc',
       ],
     }],
-    [ 'enable_printing == 0', {
-      'sources!': [
-        'ext/vector_platform_device_skia.cc',
-      ],
-    }],
     ['OS == "ios"', {
-      'sources/': [
-        ['exclude', '^ext/vector_platform_device_skia\\.'],
-      ],
       'dependencies!': [
         'skia_chrome_opts',
       ],
     }],
     [ 'OS != "android" and (OS != "linux" or use_cairo==1)', {
       'sources!': [
         'ext/bitmap_platform_device_skia.cc',
       ],
     }],
   ],
 
   'target_conditions': [
     # Pull in specific linux files for android (which have been filtered out
     # by file name rules).
     [ 'OS == "android"', {
       'sources/': [
         ['include', 'ext/platform_device_linux\\.cc$'],
       ],
     }],
   ],
 }