Put Data Reduction Proxy support in Cronet behind a gyp flag

components/cronet/android/cronet_url_request_context_adapter.h

 // 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.
 
 #ifndef COMPONENTS_CRONET_ANDROID_CRONET_URL_REQUEST_CONTEXT_ADAPTER_H_
 #define COMPONENTS_CRONET_ANDROID_CRONET_URL_REQUEST_CONTEXT_ADAPTER_H_
 
 #include <jni.h>
 
 #include <queue>
@@ skipping 11 matching lines @@
 }  // namespace base
 
 namespace net {
 class WriteToFileNetLogObserver;
 class URLRequestContext;
 class ProxyConfigService;
 }  // namespace net
 
 namespace cronet {
 
+#if defined(DATA_REDUCTION_PROXY_SUPPORT)
 class CronetDataReductionProxy;
+#endif
+
 struct URLRequestContextConfig;
 
 bool CronetUrlRequestContextAdapterRegisterJni(JNIEnv* env);
 
 // Adapter between Java CronetUrlRequestContext and net::URLRequestContext.
 class CronetURLRequestContextAdapter {
  public:
   explicit CronetURLRequestContextAdapter(
       scoped_ptr<URLRequestContextConfig> context_config);
 
@@ skipping 49 matching lines @@
   scoped_ptr<net::URLRequestContext> context_;
   scoped_ptr<net::ProxyConfigService> proxy_config_service_;
 
   // Context config is only valid untng context is initialized.
   scoped_ptr<URLRequestContextConfig> context_config_;
 
   // A queue of tasks that need to be run after context has been initialized.
   std::queue<base::Closure> tasks_waiting_for_context_;
   bool is_context_initialized_;
   int default_load_flags_;
+
+#if defined(DATA_REDUCTION_PROXY_SUPPORT)
   scoped_ptr<CronetDataReductionProxy> data_reduction_proxy_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(CronetURLRequestContextAdapter);
 };
 
 }  // namespace cronet
 
 #endif  // COMPONENTS_CRONET_ANDROID_CRONET_URL_REQUEST_CONTEXT_ADAPTER_H_