[Android] Add a java.lang.System wrapper.

net/proxy/proxy_config_service_android.cc

 // Copyright (c) 2012 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.
 
 #include "net/proxy/proxy_config_service_android.h"
 
-#include <sys/system_properties.h>
-
+#include "base/android/java_system.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
@@ skipping 130 matching lines @@
       rules->fallback_proxies.IsEmpty());
 };
 
 void GetLatestProxyConfigInternal(const GetPropertyCallback& get_property,
                                   ProxyConfig* config) {
   if (!GetProxyRules(get_property, &config->proxy_rules()))
     *config = ProxyConfig::CreateDirect();
 }
 
 std::string GetJavaProperty(const std::string& property) {
-  // Use Java System.getProperty to get configuration information.
   // TODO(pliard): Conversion to/from UTF8 ok here?
-  JNIEnv* env = AttachCurrentThread();
-  ScopedJavaLocalRef<jstring> str = ConvertUTF8ToJavaString(env, property);
-  ScopedJavaLocalRef<jstring> result =
-      Java_ProxyChangeListener_getProperty(env, str.obj());
-  return result.is_null() ?
-      std::string() : ConvertJavaStringToUTF8(env, result.obj());
+  return base::android::JavaSystem::GetProperty(property);
 }
 
 void CreateStaticProxyConfig(const std::string& host,
                              int port,
                              const std::string& pac_url,
                              const std::vector<std::string>& exclusion_list,
                              ProxyConfig* config) {
   if (!pac_url.empty()) {
     config->set_pac_url(GURL(pac_url));
     config->set_pac_mandatory(false);
@@ skipping 231 matching lines @@
         network_task_runner, jni_task_runner, get_property_callback)) {
   delegate_->SetupJNI();
   delegate_->FetchInitialConfig();
 }
 
 void ProxyConfigServiceAndroid::ProxySettingsChanged() {
   delegate_->ProxySettingsChanged();
 }
 
 } // namespace net