Added probe to determine if data reduction proxy can be used

chrome/browser/net/spdyproxy/data_reduction_proxy_settings_android.h

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_settings_android.h
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_android.h b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..2e64eb95def488ee3712b212a6d306387a16c6ca
--- /dev/null
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings_android.h
@@ -0,0 +1,111 @@
+// Copyright 2013 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 CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_SETTINGS_ANDROID_H_
+#define CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_SETTINGS_ANDROID_H_
+
+#include "base/android/jni_helper.h"
+#include "base/android/jni_string.h"
+#include "base/android/scoped_java_ref.h"
+#include "base/gtest_prod_util.h"
+#include "base/prefs/pref_service.h"
+#include "net/base/network_change_notifier.h"
+#include "net/url_request/url_fetcher.h"
+#include "net/url_request/url_fetcher_delegate.h"
+
+using base::android::ScopedJavaLocalRef;
+
+class DataReductionProxySettingsAndroid
+    : public net::URLFetcherDelegate,
+      public net::NetworkChangeNotifier::IPAddressObserver {
+ public:
+  DataReductionProxySettingsAndroid(JNIEnv* env, jobject obj);
+  virtual ~DataReductionProxySettingsAndroid();
+
+  void InitDataReductionProxySettings(JNIEnv* env, jobject obj);
+
+  jboolean IsDataReductionProxyAvailable(JNIEnv* env, jobject obj);
+  jboolean IsDataReductionProxyPromoAvailable(JNIEnv* env, jobject obj);
+  ScopedJavaLocalRef<jstring> GetDataReductionProxyOrigin(JNIEnv* env,
+                                                          jobject obj);
+  ScopedJavaLocalRef<jstring> GetDataReductionProxyValue(JNIEnv* env,
+                                                         jobject obj);
+
+  jboolean IsDataReductionProxyEnabled(JNIEnv* env, jobject obj);
+  void SetDataReductionProxyEnabled(JNIEnv* env, jobject obj,jboolean enabled);
+
+  jlong GetDataReductionLastUpdateTime(JNIEnv* env, jobject obj);
+
+  base::android::ScopedJavaLocalRef<jobject> GetContentLengths(JNIEnv* env,
+                                                               jobject obj);
+  ScopedJavaLocalRef<jlongArray> GetDailyOriginalContentLengths(JNIEnv* env,
+                                                                jobject obj);
+  ScopedJavaLocalRef<jlongArray> GetDailyReceivedContentLengths(JNIEnv* env,
+                                                                jobject obj);
+
+  void CheckDataReductionProxy(JNIEnv* env, jobject obj);

[nyquist, 2013/09/04 02:20:15]

Could you document what this method does? Or give it a better name that explains
what it does.

[bengr, 2013/09/05 02:03:49]

Done.

+
+  static bool Register(JNIEnv* env);
+
+ private:
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsAndroidTest,

[nyquist, 2013/09/04 02:20:15]

Is this needed?

[bengr, 2013/09/05 02:03:49]

Now it is.

On 2013/09/04 02:20:15, nyquist wrote:

+                           TestBypassRules);
+
+  // net::URLFetcherDelegate:
+  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+
+
+  // NetworkChangeNotifier::IPAddressObserver:
+  virtual void OnIPAddressChanged() OVERRIDE;
+
+  bool IsDataReductionProxyAvailable();
+  bool IsDataReductionProxyPromoAvailable();
+
+  void AddDefaultProxyBypassRules();
+  void AddURLPatternToBypass(const std::string& pattern);
+  void AddHostPatternToBypass(const std::string& pattern);
+  void AddPatternToBypass(const std::string& url_or_host,
+                          const std::string& pattern);
+  void AddHostToBypass(const std::string& host);
+  void AddURLSubstringToBypass(const std::string& url, int from, int to);
+
+  PrefService* GetPrefService();
+
+  std::string GetDataReductionProxyOriginHostPort();
+  void ResetDataReductionStatistics();
+
+  void SetProxyPac(bool enable_spdy_proxy, bool at_startup);
+
+  std::string GetProxyCheckURL();
+
+  ScopedJavaLocalRef<jlongArray> GetDailyContentLengths(JNIEnv* env,
+                                                        const char* pref_name);
+  void GetContentLengths(int days,
+                         int64* original_content_length,
+                         int64* received_content_length,
+                         int64* last_update_time);
+
+  void CheckDataReductionProxyIsAvailable(std::string url);
+
+  std::string GetProxyPacScript();
+
+  std::vector<std::string> bypass_rules_;
+
+  // Indicate whether a user has turned on SPDY proxy auth previously in this
+  // session.
+  bool has_turned_on_;
+
+  // Indicate whether a user has turned off SPDY proxy auth previously in this
+  // session.
+  bool has_turned_off_;
+
+  bool disabled_by_carrier_;
+  bool enabled_by_user_;
+
+  scoped_ptr<net::URLFetcher> fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(DataReductionProxySettingsAndroid);
+};
+
+#endif  // CHROME_BROWSER_NET_SPDYPROXY_DATA_REDUCTION_PROXY_SETTINGS_ANDROID_H_