<project>
  <target name="doc" description="generate documentation">
      <javadoc destdir="${doc.dir}"
               overview="${overview}"
               windowtitle="Cronet API"
               nohelp="yes"
               notree="yes"
               nodeprecated="yes"
               linkoffline="https://developer.android.com/reference ."
               bootclasspath="../../../../third_party/android_tools/sdk/platforms/android-22/android.jar"
               >
        <fileset dir="${source.dir}" defaultexcludes="yes">
          <include name="**/*.java"/>
          <!-- exclude legacy API -->
          <exclude name="**/Chromium*.java"/>
          <exclude name="**/ChunkedWritableByteChannel*.java"/>
          <exclude name="**/HttpUrl*.java"/>
        </fileset>
      </javadoc>
  </target>
</project>

<project>
  <target name="doc" description="generate documentation">
      <javadoc destdir="${doc.dir}"
               overview="${overview}"
               windowtitle="Cronet API"
               nohelp="yes"
               notree="yes"
               nodeprecated="yes"
               linkoffline="https://developer.android.com/reference ."
               bootclasspath="../../../../third_party/android_tools/sdk/platforms/android-22/android.jar"
               use="true"
               >
        <fileset dir="${source.dir}" defaultexcludes="yes">
          <include name="**/*.java"/>
          <!-- exclude legacy API -->
          <exclude name="**/Chromium*.java"/>
          <exclude name="**/ChunkedWritableByteChannel*.java"/>
          <exclude name="**/HttpUrl*.java"/>
        </fileset>
      </javadoc>
  </target>
</project>

Include usage pages for Javadoc
[Cronet] Include usage pages for Javadoc

Include "use" option to generate usage pages in Javadoc.

Review URL: https://codereview.chromium.org/1334323002

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#348448}
