Adding SwiftShader to the DEPS file

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 36 matching lines @@
   'swarming_revision': 'e4288c3040a32f2e7ad92f957668f2ee3d36e5a6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
   'angle_revision': '3416ff3eef4f29c157785e862f6518fc099855f2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
   'buildtools_revision': '33a32b8aa2b7274d246fcf85ce8f762cf4291418',
   # Three lines of non-changing comments so that
+  # the commit queue can handle CLs rolling SwiftShader
+  # and whatever else without interference from each other.
+  'swiftshader_revision': '3e204de9bb74b5379b42b7eea5c4b898b2698d56',
+  # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
   'pdfium_revision': '85af2a3cfcdfb2200510d337bfbf5b405858aa3b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
   # and whatever else without interference from each other.
   'openmax_dl_revision': '57d33bee7823e76393692f8d58e0478d6b79d153',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.
@@ skipping 28 matching lines @@
   'libfuzzer_revision': '764f3890a06c04060321ede273521faf587c868f',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.
 # If you need to add a new host, contact chrome infrastracture team.
 allowed_hosts = [
   'chromium.googlesource.com',
   'boringssl.googlesource.com',
   'pdfium.googlesource.com',
   'android.googlesource.com',
+  'swiftshader.googlesource.com',
 ]
 
 deps = {
   'src/breakpad/src':
    Var('chromium_git') + '/breakpad/breakpad/src.git' + '@' + 'c85196f3c42b2eb8559464892a4b1749620a64d4',
 
   'src/buildtools':
    Var('chromium_git') + '/chromium/buildtools.git' + '@' +  Var('buildtools_revision'),
 
   'src/sdch/open-vcdiff':
@@ skipping 127 matching lines @@
 
   'src/media/cdm/api':
    Var('chromium_git') + '/chromium/cdm.git' + '@' + '245af7782c9f54d776722a2c7b53372ee040e5fc',
 
   'src/third_party/mesa/src':
    Var('chromium_git') + '/chromium/deps/mesa.git' + '@' + 'ef811c6bd4de74e13e7035ca882cc77f85793fef',
 
   'src/third_party/ced/src':
     Var('chromium_git') + '/external/github.com/google/compact_enc_det.git' + '@' + '9012c0ab648025dd0f8df14294bf5d6d73793ac9',
 
+  'src/third_party/swiftshader':
+   'https://swiftshader.googlesource.com/SwiftShader.git' + '@' +  Var('swiftshader_revision'),
+
   'src/third_party/cld_2/src':
     Var('chromium_git') + '/external/github.com/CLD2Owners/cld2.git' + '@' + '84b58a5d7690ebf05a91406f371ce00c3daf31c0',
 
   'src/third_party/cld_3/src':
     Var('chromium_git') + '/external/github.com/google/cld_3.git' + '@' + 'e3aab366eb396e76f01e53c81d62a8a4d3385ee0',
 
   'src/third_party/libwebm/source':
    Var('chromium_git') + '/webm/libwebm.git' + '@' + '9a235e0bc94319c5f7184bd69cbe5468a74a025c',
 
   'src/third_party/pdfium':
@@ skipping 711 matching lines @@
     'name': 'doclava',
     'pattern': '.',
     'action': ['python',
                'src/build/android/download_doclava.py',
     ],
   },
 ]
 
 # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
 recursedeps = [("src/third_party/angle", "DEPS.chromium")]