Hook up TABLET_MODE switch to maximize_mode_controller

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 368 matching lines @@
   'unix': {
     # Linux, really.
     'src/third_party/xdg-utils':
      Var('chromium_git') + '/chromium/deps/xdg-utils.git' + '@' + 'd80274d5869b17b8c9067a1022e4416ee7ed5e0d',
 
     'src/third_party/lss':
       Var('chromium_git') + '/external/linux-syscall-support/lss.git' + '@' + Var('lss_revision'),
 
     # For Linux and Chromium OS.
     'src/third_party/cros_system_api':
-     Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + '534baa06a1052edfd12bf95fa7786f0ba259e9fb',
+     Var('chromium_git') + '/chromiumos/platform/system_api.git' + '@' + '1929dfe2052827b3fee0974844cfbfff4f22cca3',
 
     # Note that this is different from Android's freetype repo.
     'src/third_party/freetype2/src':
      Var('chromium_git') + '/chromium/src/third_party/freetype2.git' + '@' + 'fc1532a7c4c592f24a4c1a0261d2845524ca5cff',
 
     'src/third_party/freetype-android/src':
      Var('chromium_git') + '/chromium/src/third_party/freetype2.git' + '@' + Var('freetype_android_revision'),
 
     # Build tools for Chrome OS. Note: This depends on third_party/pyelftools.
     'src/third_party/chromite':
@@ skipping 453 matching lines @@
                'src/build/android/download_doclava.py',
     ],
   },
   {
     # A change to a .gyp, .gypi, or to GYP itself should run the generator.
     'name': 'gyp',
     'pattern': '.',
     'action': ['python', 'src/build/gyp_chromium', '--running-as-hook'],
   },
 ]