Delete pdfium fetch recipe

It's incorrect - the checkout it creates is unusable for pdfium
development.

Correct instructions are here:
https://code.google.com/p/pdfium/wiki/Build

BUG=510419
R=phajdan.jr@chromium.org

Review URL: https://codereview.chromium.org/1382543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@296946 0039d316-1c4b-4281-b951-d872f2087c98

recipes/pdfium.py

-# Copyright 2015 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.
-
-import sys
-
-import recipe_util  # pylint: disable=F0401
-
-
-# This class doesn't need an __init__ method, so we disable the warning
-# pylint: disable=W0232
-class PDFium(recipe_util.Recipe):
-  """Basic Recipe class for PDFium."""
-
-  @staticmethod
-  def fetch_spec(props):
-    url = 'https://pdfium.googlesource.com/pdfium.git'
-    solution = {
-        'name'        : 'pdfium',
-        'url'         : url,
-        'deps_file'   : 'DEPS',
-        'managed'     : False,
-        'custom_deps' : {},
-        'safesync_url': '',
-    }
-    spec = {
-      'solutions': [solution],
-    }
-    return {
-      'type': 'gclient_git',
-      'gclient_git_spec': spec,
-    }
-
-  @staticmethod
-  def expected_root(_props):
-    return 'pdfium'
-
-
-def main(argv=None):
-  return PDFium().handle_args(argv)
-
-
-if __name__ == '__main__':
-  sys.exit(main(sys.argv))