base: Support setting thread priorities generically.

base/base.gypi

 # Copyright (c) 2012 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 449 matching lines @@
           'task_runner.cc',
           'task_runner.h',
           'task_runner_util.h',
           'template_util.h',
           'thread_task_runner_handle.cc',
           'thread_task_runner_handle.h',
           'threading/non_thread_safe.h',
           'threading/non_thread_safe_impl.cc',
           'threading/non_thread_safe_impl.h',
           'threading/platform_thread.h',
+          'threading/platform_thread_android.cc',
+          'threading/platform_thread_linux.cc',
           'threading/platform_thread_mac.mm',
           'threading/platform_thread_posix.cc',
           'threading/platform_thread_win.cc',
           'threading/post_task_and_reply_impl.cc',
           'threading/post_task_and_reply_impl.h',
           'threading/sequenced_worker_pool.cc',
           'threading/sequenced_worker_pool.h',
           'threading/simple_thread.cc',
           'threading/simple_thread.h',
           'threading/thread.cc',
@@ skipping 175 matching lines @@
             ],
             'sources/': [
               ['include', '^files/file_path_watcher_linux\\.cc$'],
               ['include', '^process_util_linux\\.cc$'],
               ['include', '^posix/unix_domain_socket_linux\\.cc$'],
               ['include', '^strings/sys_string_conversions_posix\\.cc$'],
               ['include', '^sys_info_linux\\.cc$'],
               ['include', '^worker_pool_linux\\.cc$'],
             ],
           }],
+          ['OS == "android" and _toolset == "host" and host_os == "linux"', {
+            'sources/': [
+              # Pull in specific files for host builds.
+              ['include', 'threading/platform_thread_linux.cc$'],
+            ],
+          }],
           ['OS == "ios"', {
             'sources/': [
               # Pull in specific Mac files for iOS (which have been filtered out
               # by file name rules).
               ['include', '^atomicops_internals_mac\\.'],
               ['include', '^base_paths_mac\\.'],
               ['include', '^file_util_mac\\.'],
               ['include', '^file_version_info_mac\\.'],
               ['include', '^mac/bundle_locations\\.'],
               ['include', '^mac/foundation_util\\.'],
@@ skipping 102 matching lines @@
           ['<(use_system_nspr)==1 and >(nacl_untrusted_build)==0', {
             'sources/': [
               ['exclude', '^third_party/nspr/'],
             ],
           }],
         ],
       }],
     ],
   },
 }