Add support for backgrounding processes on the Mac

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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 472 matching lines @@
     "process/process_info_mac.cc",
     "process/process_info_win.cc",
     "process/process_iterator.cc",
     "process/process_iterator.h",
     "process/process_iterator_freebsd.cc",
     "process/process_iterator_linux.cc",
     "process/process_iterator_mac.cc",
     "process/process_iterator_openbsd.cc",
     "process/process_iterator_win.cc",
     "process/process_linux.cc",
+    "process/process_mac.cc",
     "process/process_metrics.cc",
     "process/process_metrics.h",
     "process/process_metrics_freebsd.cc",
     "process/process_metrics_ios.cc",
     "process/process_metrics_linux.cc",
     "process/process_metrics_mac.cc",
     "process/process_metrics_openbsd.cc",
     "process/process_metrics_posix.cc",
     "process/process_metrics_win.cc",
     "process/process_posix.cc",
@@ skipping 989 matching lines @@
   }
 
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 }
 
 if (is_android) {
   # GYP: //base.gyp:base_jni_headers
   generate_jni("base_jni_headers") {
     sources = [
+      "android/java/src/org/chromium/base/AnimationFrameTimeHistogram.java",
       "android/java/src/org/chromium/base/ApplicationStatus.java",
-      "android/java/src/org/chromium/base/AnimationFrameTimeHistogram.java",
       "android/java/src/org/chromium/base/BuildInfo.java",
       "android/java/src/org/chromium/base/CommandLine.java",
       "android/java/src/org/chromium/base/ContentUriUtils.java",
       "android/java/src/org/chromium/base/CpuFeatures.java",
       "android/java/src/org/chromium/base/EventLog.java",
       "android/java/src/org/chromium/base/FieldTrialList.java",
       "android/java/src/org/chromium/base/ImportantFileWriterAndroid.java",
       "android/java/src/org/chromium/base/JNIUtils.java",
       "android/java/src/org/chromium/base/JavaHandlerThread.java",
       "android/java/src/org/chromium/base/LocaleUtils.java",
@@ skipping 78 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }