Put Data Reduction Proxy support in Cronet behind a gyp flag

components/cronet/android/test/src/org/chromium/net/NativeTestServer.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.net;
 
 import android.content.Context;
 import android.os.ConditionVariable;
 
 import org.chromium.base.CalledByNative;
@@ skipping 77 matching lines @@
     }
 
     public static String getNotFoundURL() {
         return nativeGetFileURL("/notfound.html");
     }
 
     public static String getHostPort() {
         return nativeGetHostPort();
     }
 
+    public static boolean isDataReductionProxySupported() {
+        return nativeIsDataReductionProxySupported();
+    }
+
     @CalledByNative
     private static void onHostResolverProcRegistered() {
         sHostResolverBlock.open();
     }
 
     private static native boolean nativeStartNativeTestServer(String filePath);
     private static native void nativeShutdownNativeTestServer();
     private static native void nativeRegisterHostResolverProc(
             long contextAdapter, boolean isLegacyAPI);
     private static native String nativeGetEchoBodyURL();
     private static native String nativeGetEchoHeaderURL(String header);
     private static native String nativeGetEchoAllHeadersURL();
     private static native String nativeGetEchoMethodURL();
     private static native String nativeGetRedirectToEchoBody();
     private static native String nativeGetFileURL(String filePath);
     private static native String nativeGetSdchURL();
     private static native String nativeGetHostPort();
+    private static native boolean nativeIsDataReductionProxySupported();
 }