Update from https://crrev.com/328418

base/base.gypi

Index: base/base.gypi
diff --git a/base/base.gypi b/base/base.gypi
index bbc3f60fb5ade6279cf637eefc2e39c533ef1c33..4a8cd17265a23e3630191ad622bb1131523f187b 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -62,6 +62,8 @@
           'android/library_loader/library_load_from_apk_status_codes.h',
           'android/library_loader/library_loader_hooks.cc',
           'android/library_loader/library_loader_hooks.h',
+          'android/library_loader/library_prefetcher.cc',
+          'android/library_loader/library_prefetcher.h',
           'android/locale_utils.cc',
           'android/locale_utils.h',
           'android/memory_pressure_listener_android.cc',
@@ -290,6 +292,8 @@
           'mac/mac_util.mm',
           'mac/mach_logging.cc',
           'mac/mach_logging.h',
+          'mac/memory_pressure_monitor_mac.cc',
+          'mac/memory_pressure_monitor_mac.h',
           'mac/objc_property_releaser.h',
           'mac/objc_property_releaser.mm',
           'mac/os_crash_dumps.cc',
@@ -866,6 +870,7 @@
               ['include', '^mac/scoped_mach_vm\\.'],
               ['include', '^mac/scoped_nsautorelease_pool\\.'],
               ['include', '^mac/scoped_nsobject\\.'],
+              ['include', '^mac/scoped_objc_class_swizzler\\.'],
               ['include', '^message_loop/message_pump_mac\\.'],
               ['include', '^strings/sys_string_conversions_mac\\.'],
               ['include', '^threading/platform_thread_mac\\.'],