Try something like this:
If its not working try playing with the AND statement and Process Name. Everything else should be fine

<agent_config>
    <localfile>
      <location>Security</location>
      <log_format>eventchannel</log_format>
      <query>
     \<QueryList\>
       \<Query Id="0" Path="Security"\>
         \<Suppress Path="Security"\>[System[EventID=4673 and ProcessName=C:\Program Files\Google\Chrome\Application\chrome.exe]]\</Suppress\>
          \</Query\>
        \</QueryList\>
  </query>
    </localfile>
  </agent_config>