idea_plugin/resources/META-INF/plugin.xml

<idea-plugin version="2">
  <id>google-java-format</id>
  <name>google-java-format</name>
  <version>1.3.1</version>
  <vendor url="https://github.com/google/google-java-format">
    Google
  </vendor>

  <!-- Mark it as available on all JetBrains IDEs. It's really only useful in
       IDEA and Android Studio, but there's no way to specify that for some
       reason. It won't crash PyCharm or anything, so whatever. -->
  <depends>com.intellij.modules.lang</depends>

  <description><![CDATA[
      Formats Java source code to comply with Google Style.
    ]]></description>

  <!-- CodeStyleManager continues to change across API versions, and will need to be updated again
       for 2017.2. -->
  <idea-version since-build="171" until-build="171.*"/>

  <project-components>
    <component>
      <implementation-class>
        com.google.googlejavaformat.intellij.GoogleJavaFormatSettings
      </implementation-class>
      <loadForDefaultProject/>
    </component>
  </project-components>

  <extensions defaultExtensionNs="com.intellij">
    <projectConfigurable instance="com.google.googlejavaformat.intellij.GoogleJavaFormatConfigurable"
                         id="google-java-format.settings"
                         displayName="google-java-format Settings"/>
  </extensions>

</idea-plugin>