Delete Cronet Data Reduction Proxy integration

components/cronet/android/test/native_test_server.cc

Index: components/cronet/android/test/native_test_server.cc
diff --git a/components/cronet/android/test/native_test_server.cc b/components/cronet/android/test/native_test_server.cc
index 6f4a21ebb2a4075f541da0079759ca7ae537ddca..54f32ab031af2edd764df4badb391ecf6f5b0901 100644
--- a/components/cronet/android/test/native_test_server.cc
+++ b/components/cronet/android/test/native_test_server.cc
@@ -313,15 +313,6 @@ ScopedJavaLocalRef<jstring> GetHostPort(JNIEnv* env,
   return base::android::ConvertUTF8ToJavaString(env, host_port);
 }
 
-jboolean IsDataReductionProxySupported(JNIEnv* env,
-                                       const JavaParamRef<jclass>& jcaller) {
-#if defined(DATA_REDUCTION_PROXY_SUPPORT)
-  return JNI_TRUE;
-#else
-  return JNI_FALSE;
-#endif
-}
-
 bool RegisterNativeTestServer(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }