Does android use okhttp internally?-open source projects square/okhttp

This is a stack trace I get when running an android app I recently inherited. We’re not using okhttp as an explicity dependency, and the com.android.okhttp in the trace makes me think the aosp is using okhttp now internally?

java.lang.Throwable: Explicit termination method 'close' not called
                        E      at dalvik.system.CloseGuard.open(CloseGuard.java:184)
                        E      at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:278)
                        E      at com.android.okhttp.Connection.upgradeToTls(Connection.java:146)
                        E      at com.android.okhttp.Connection.connect(Connection.java:107)
                        E      at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:294)
                        E      at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
                        E      at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
                        E      at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
                        E      at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:296)
                        E      at com.android.okhttp.internal.http.HttpURLConnectionImpl.getHeaderField(HttpURLConnectionImpl.java:143)
                        E      at java.net.URLConnection.getHeaderFieldInt(URLConnection.java:544)
                        E      at java.net.URLConnection.getContentLength(URLConnection.java:316)
                        E      at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getContentLength(HttpsURLConnectionImpl.java:18
                           2)