Reland of Add process uptime metadata event in tracing

base/BUILD.gn

 # Copyright (c) 2013 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.
 
 # HOW TO WRITE CONDITIONALS IN THIS FILE
 # ======================================
 #
 # In many other places, one would write a conditional that expresses all the
 # cases when a source file is used or unused, and then either add or subtract
 # it from the sources list in that case
@@ skipping 1178 matching lines @@
     set_sources_assignment_filter([])
     sources += [
       "debug/proc_maps_linux.cc",
       "files/file_path_watcher_linux.cc",
       "posix/unix_domain_socket_linux.cc",
       "power_monitor/power_monitor_device_source_android.cc",
       "power_monitor/power_monitor_device_source_android.h",
       "process/internal_linux.cc",
       "process/memory_linux.cc",
       "process/process_handle_linux.cc",
+      "process/process_info_linux.cc",
       "process/process_iterator_linux.cc",
       "process/process_metrics_linux.cc",
       "sys_info_linux.cc",
     ]
     set_sources_assignment_filter(sources_assignment_filter)
 
     deps += [
       ":base_jni_headers",
       "//third_party/android_tools:cpu_features",
       "//third_party/ashmem",
@@ skipping 838 matching lines @@
     "os_compat_android_unittest.cc",
     "path_service_unittest.cc",
     "pending_task_unittest.cc",
     "pickle_unittest.cc",
     "posix/file_descriptor_shuffle_unittest.cc",
     "posix/unix_domain_socket_linux_unittest.cc",
     "power_monitor/power_monitor_unittest.cc",
     "process/memory_unittest.cc",
     "process/memory_unittest_mac.h",
     "process/memory_unittest_mac.mm",
+    "process/process_info_unittest.cc",
     "process/process_metrics_unittest.cc",
     "process/process_metrics_unittest_ios.cc",
     "process/process_unittest.cc",
     "process/process_util_unittest.cc",
     "profiler/stack_sampling_profiler_unittest.cc",
     "profiler/tracked_time_unittest.cc",
     "rand_util_unittest.cc",
     "run_loop_unittest.cc",
     "scoped_clear_errno_unittest.cc",
     "scoped_generic_unittest.cc",
@@ skipping 607 matching lines @@
 }
 
 fuzzer_test("base_json_correctness_fuzzer") {
   sources = [
     "json/correctness_fuzzer.cc",
   ]
   deps = [
     ":base",
   ]
 }