Add support for robolectric play-services-shadows.

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 476 matching lines @@
     'src/third_party/mockito/src':
       Var('chromium_git') + '/external/mockito/mockito.git' + '@' + 'de83ad4598ad4cf5ea53c69a8a8053780b04b850',
 
     'src/third_party/netty-tcnative/src':
       Var('chromium_git') + '/external/netty-tcnative.git' + '@' + '2e0f9503f3d4efe6fc3f70077f22471e83ffb446',
 
     'src/third_party/netty4/src':
       Var('chromium_git') + '/external/netty4.git' + '@' + 'e0f26303b4ce635365be19414d0ac81f2ef6ba3c',
 
     'src/third_party/robolectric/robolectric':
-      Var('chromium_git') + '/external/robolectric.git' + '@' + '5244ef6a3a6aada84a7f4f270f253b760019c14c',
+      Var('chromium_git') + '/external/robolectric.git' + '@' + '2a0b6ba221c14f3371813a676ce06143353e448d',
 
     'src/third_party/ub-uiautomator/lib':
       Var('chromium_git') + '/chromium/third_party/ub-uiautomator.git' + '@' + '00270549ce3161ae72ceb24712618ea28b4f9434',
 
     'src/third_party/leakcanary/src':
       Var('chromium_git') + '/external/github.com/square/leakcanary.git' + '@' + '608ded739e036a3aa69db47ac43777dcee506f8e',
 
     'src/third_party/lss':
       Var('chromium_git') + '/linux-syscall-support.git' + '@' + Var('lss_revision'),
 
@@ skipping 641 matching lines @@
 recursedeps = [
   # buildtools provides clang_format, libc++, and libc++abi
   'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
   # SwiftShader manages DEPS that it also owns the build files for, such as Subzero.
   ("src/third_party/swiftshader", "DEPS"),
 ]