Remove most of the None DEPS entries for iOS

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 352 matching lines @@
       Var('chromium_git') + '/external/google-toolbox-for-mac.git' + '@' + Var('google_toolbox_for_mac_revision'),
 
     'src/third_party/nss':
      Var('chromium_git') + '/chromium/deps/nss.git' + '@' + Var('nss_revision'),
 
     # class-dump utility to generate header files for undocumented SDKs
     'src/testing/iossim/third_party/class-dump':
      Var('chromium_git') + '/chromium/deps/class-dump.git' + '@' + '89bd40883c767584240b4dade8b74e6f57b9bdab',
 
     # Code that's not needed due to not building everything
-    'src/build/util/support': None,
     'src/chrome/test/data/perf/canvas_bench': None,
     'src/chrome/test/data/perf/frame_rate/content': None,
-    'src/media/cdm/ppapi/api': None,
     'src/native_client': None,
-    'src/third_party/bidichecker': None,
-    'src/third_party/brotli/src': None,
     'src/third_party/cld_2/src': None,
     'src/third_party/ffmpeg': None,
     'src/third_party/hunspell_dictionaries': None,
     'src/third_party/hunspell': None,
-    'src/third_party/libc++/trunk': None,
-    'src/third_party/libc++abi/trunk': None,
-    'src/third_party/libexif/sources': None,
-    'src/third_party/libjpeg_turbo': None,
-    'src/third_party/libsrtp': None,
-    'src/third_party/opus/src': None,
-    'src/third_party/openmax_dl': None,
-    'src/third_party/ots': None,
-    'src/third_party/pymox/src': None,
-    'src/third_party/safe_browsing/testing': None,
-    'src/third_party/scons-2.0.1': None,
-    'src/third_party/sfntly/cpp/src': None,
-    'src/third_party/swig/Lib': None,
-    'src/third_party/usrsctp/usrsctplib': None,
-    'src/third_party/v8-i18n': None,
-    'src/third_party/webdriver/pylib': None,
     'src/third_party/webgl': None,
-    'src/third_party/webpagereplay': None,
-    'src/third_party/WebKit/LayoutTests/w3c/web-platform-tests': None,
-    'src/third_party/WebKit/LayoutTests/w3c/csswg-test': None,
-    'src/third_party/yasm/source/patched-yasm': None,
-    'src/tools/page_cycler/acid3': None,
   },
   'mac': {
     'src/chrome/tools/test/reference_build/chrome_mac':
      Var('chromium_git') + '/chromium/reference_builds/chrome_mac.git' + '@' + '8dc181329e7c5255f83b4b85dc2f71498a237955',
 
     'src/third_party/google_toolbox_for_mac/src':
       Var('chromium_git') + '/external/google-toolbox-for-mac.git' + '@' + Var('google_toolbox_for_mac_revision'),
 
 
     'src/third_party/pdfsqueeze':
@@ skipping 379 matching lines @@
     # corresponding .py files have already been deleted.
     'name': 'remove_stale_pyc_files',
     'pattern': 'src/tools/.*\\.py',
     'action': [
         'python',
         'src/tools/remove_stale_pyc_files.py',
         'src/tools',
     ],
   },
 ]