Fix gyp build

Change-Id: I87b4fdb1c5f6b85150b8575767689102fe1d8a8e
diff --git a/aos/build/aos.gyp b/aos/build/aos.gyp
index 2c44ed6..bbdb2c9 100644
--- a/aos/build/aos.gyp
+++ b/aos/build/aos.gyp
@@ -16,6 +16,7 @@
         ['OS=="linux"', {
           'sources': [
             '<(AOS)/linux_code/logging/linux_interface.cc',
+            '<(AOS)/common/logging/context.cc',
           ],
           'dependencies': [
             '<(AOS)/linux_code/linux_code.gyp:complex_thread_local',