add missing headers in components/tracing/child_trace_message_filter.h and 
content/child/child_resource_message_filter.cc

BUG=259043

Review URL: https://chromiumcodereview.appspot.com/18863004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@211542 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed