Data Reduction Proxy class ownership updates and Settings cleanup

components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
index 911668705fed33cf74bf7068c2e001c537e635ec..5059ee057999fa3b2ca6e8d8ba0751582ae7ac4b 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_settings.h
@@ -11,31 +11,18 @@
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "base/threading/thread_checker.h"
-#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_config.h"
-#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_configurator.h"
-#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_statistics_prefs.h"
-#include "components/data_reduction_proxy/core/common/data_reduction_proxy_params.h"
-#include "net/base/net_log.h"
-#include "net/base/net_util.h"
-#include "net/base/network_change_notifier.h"
-#include "net/url_request/url_fetcher_delegate.h"
+#include "url/gurl.h"
 
 class PrefService;
 
-namespace net {
-class HostPortPair;
-class HttpNetworkSession;
-class HttpResponseHeaders;
-class URLFetcher;
-class URLRequestContextGetter;
-}
-
 namespace data_reduction_proxy {
 
+class DataReductionProxyConfig;
 class DataReductionProxyEventStore;
+class DataReductionProxyIOData;
+class DataReductionProxyStatisticsPrefs;
 
 // The number of days of bandwidth usage statistics that are tracked.
 const unsigned int kNumDaysInHistory = 60;
@@ -62,30 +49,18 @@ enum ProxyStartupState {
 // be called from there.
 // TODO(marq): Convert this to be a KeyedService with an
 // associated factory class, and refactor the Java call sites accordingly.
-class DataReductionProxySettings
-    : public net::URLFetcherDelegate,
-      public net::NetworkChangeNotifier::IPAddressObserver {
+class DataReductionProxySettings {
  public:
   typedef std::vector<long long> ContentLengthList;
 
-  static bool IsProxyKeySetOnCommandLine();
-
-  DataReductionProxySettings(scoped_ptr<DataReductionProxyParams> params);
-  ~DataReductionProxySettings() override;
+  DataReductionProxySettings();
+  virtual ~DataReductionProxySettings();
 
-  DataReductionProxyParams* params() const {
-    return config_->params();
-  }
-
-  // Initializes the data reduction proxy with profile and local state prefs,
-  // and a |UrlRequestContextGetter| for canary probes. The caller must ensure
-  // that all parameters remain alive for the lifetime of the
-  // |DataReductionProxySettings| instance.
+  // Initializes the data reduction proxy with profile prefs and a
+  // |DataReductionProxyIOData|. The caller must ensure that all parameters
+  // remain alive for the lifetime of the |DataReductionProxySettings| instance.
   void InitDataReductionProxySettings(
-      PrefService* prefs,
-      net::URLRequestContextGetter* url_request_context_getter,
-      net::NetLog* net_log,
-      DataReductionProxyEventStore* event_store);
+      PrefService* prefs, DataReductionProxyIOData* io_data);
 
   // Sets the |statistics_prefs_| to be used for data reduction proxy pref reads
   // and writes.
@@ -97,11 +72,6 @@ class DataReductionProxySettings
   void SetOnDataReductionEnabledCallback(
       const base::Callback<void(bool)>& on_data_reduction_proxy_enabled);
 
-  // Sets the logic the embedder uses to set the networking configuration that
-  // causes traffic to be proxied.
-  void SetProxyConfigurator(
-      DataReductionProxyConfigurator* configurator);
-
   // Returns true if the proxy is enabled.
   bool IsDataReductionProxyEnabled();
 
@@ -111,9 +81,7 @@ class DataReductionProxySettings
   // Returns true if the proxy is managed by an adminstrator's policy.
   bool IsDataReductionProxyManaged();
 
-  // Enables or disables the data reduction proxy. If a probe URL is available,
-  // and a probe request fails at some point, the proxy won't be used until a
-  // probe succeeds.
+  // Enables or disables the data reduction proxy.
   void SetDataReductionProxyEnabled(bool enabled);
 
   // Enables or disables the alternative data reduction proxy configuration.
@@ -149,11 +117,7 @@ class DataReductionProxySettings
 
   ContentLengthList GetDailyContentLengths(const char* pref_name);
 
-  // net::URLFetcherDelegate:
-  void OnURLFetchComplete(const net::URLFetcher* source) override;
-
-  // Configures data reduction proxy and makes a request to the probe URL to
-  // determine server availability. |at_startup| is true when this method is
+  // Configures data reduction proxy. |at_startup| is true when this method is
   // called in response to creating or loading a new profile.
   void MaybeActivateDataReductionProxy(bool at_startup);
 
@@ -163,64 +127,55 @@ class DataReductionProxySettings
     return event_store_;
   }
 
+  // Returns true if the data reduction proxy configuration may be used.
+  bool Allowed() const {
+    return allowed_;
+  }
+
+  // Returns true if the alternative data reduction proxy configuration may be
+  // used.
+  bool AlternativeAllowed() const {
+    return alternative_allowed_;
+  }
+
+  // Returns true if the data reduction proxy promo may be shown.
+  // This is idependent of whether the data reduction proxy is allowed.
+  bool PromoAllowed() const {
+    return promo_allowed_;
+  }
+
+  // The data reduction proxy primary origin
+  const GURL& PrimaryOrigin() const {
+    return primary_origin_;
+  }
+
+  // Permits changing the underlying |DataReductionProxyConfig| without running
+  // the initialization loop.
+  void ResetConfigForTest(DataReductionProxyConfig* config) {
+    config_ = config;
+  }
+
  protected:
   void InitPrefMembers();
 
-  // Returns a fetcher for the probe to check if OK for the proxy to use SPDY.
-  // Virtual for testing.
-  virtual net::URLFetcher* GetURLFetcherForAvailabilityCheck();
+  void UpdateConfigValues();
 
   // Virtualized for unit test support.
   virtual PrefService* GetOriginalProfilePrefs();
 
-  // Sets the proxy configs, enabling or disabling the proxy according to
-  // the value of |enabled| and |alternative_enabled|. Use the alternative
-  // configuration only if |enabled| and |alternative_enabled| are true. If
-  // |restricted| is true, only enable the fallback proxy. |at_startup| is true
-  // when this method is called from InitDataReductionProxySettings.
-  virtual void SetProxyConfigs(bool enabled,
-                               bool alternative_enabled,
-                               bool restricted,
-                               bool at_startup);
-
   // Metrics method. Subclasses should override if they wish to provide
   // alternatives.
   virtual void RecordDataReductionInit();
 
-  virtual void AddDefaultProxyBypassRules();
-
-  // Writes a warning to the log that is used in backend processing of
-  // customer feedback. Virtual so tests can mock it for verification.
-  virtual void LogProxyState(bool enabled, bool restricted, bool at_startup);
-
-  // Virtualized for mocking. Records UMA containing the result of requesting
-  // the probe URL.
-  virtual void RecordProbeURLFetchResult(
-      data_reduction_proxy::ProbeURLFetchResult result);
-
   // Virtualized for mocking. Records UMA specifying whether the proxy was
   // enabled or disabled at startup.
   virtual void RecordStartupState(
       data_reduction_proxy::ProxyStartupState state);
 
-  // Virtualized for mocking. Returns the list of network interfaces in use.
-  virtual void GetNetworkList(net::NetworkInterfaceList* interfaces,
-                              int policy);
-
-  DataReductionProxyConfigurator* configurator() {
-    return configurator_;
-  }
-
  private:
   friend class DataReductionProxySettingsTestBase;
   friend class DataReductionProxySettingsTest;
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestAuthenticationInit);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestAuthHashGeneration);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestAuthHashGenerationWithOriginSetViaSwitch);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestResetDataReductionStatistics);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestIsProxyEnabledOrManaged);
@@ -231,53 +186,27 @@ class DataReductionProxySettings
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestMaybeActivateDataReductionProxy);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestOnIPAddressChanged);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestOnProxyEnabledPrefChange);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestInitDataReductionProxyOn);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestInitDataReductionProxyOff);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestBypassList);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            CheckInitMetricsWhenNotAllowed);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestSetProxyConfigs);
-  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
-                           TestSetProxyConfigsHoldback);
-
-  // NetworkChangeNotifier::IPAddressObserver:
-  void OnIPAddressChanged() override;
 
   void OnProxyEnabledPrefChange();
   void OnProxyAlternativeEnabledPrefChange();
 
   void ResetDataReductionStatistics();
 
-  // Requests the proxy probe URL, if one is set.  If unable to do so, disables
-  // the proxy, if enabled. Otherwise enables the proxy if disabled by a probe
-  // failure.
-  void ProbeWhetherDataReductionProxyIsAvailable();
-
-  // Disables use of the data reduction proxy on VPNs. Returns true if the
-  // data reduction proxy has been disabled.
-  bool DisableIfVPN();
-
-  // Generic method to get a URL fetcher.
-  net::URLFetcher* GetBaseURLFetcher(const GURL& gurl, int load_flags);
-
-  std::string key_;
-  bool restricted_by_carrier_;
-  bool enabled_by_user_;
-  bool disabled_on_vpn_;
   bool unreachable_;
 
-  scoped_ptr<net::URLFetcher> fetcher_;
-
-  // A new BoundNetLog is created for each canary check so that we can correlate
-  // the request begin/end phases.
-  net::BoundNetLog bound_net_log_;
+  // The following values are cached in order to access the values on the
+  // correct thread.
+  bool allowed_;
+  bool alternative_allowed_;
+  bool promo_allowed_;
+  GURL primary_origin_;
 
   BooleanPrefMember spdy_proxy_auth_enabled_;
   BooleanPrefMember data_reduction_proxy_alternative_enabled_;
@@ -285,24 +214,16 @@ class DataReductionProxySettings
   PrefService* prefs_;
   DataReductionProxyStatisticsPrefs* statistics_prefs_;
 
-  net::URLRequestContextGetter* url_request_context_getter_;
-
-  // The caller must ensure that the |net_log_|, if set, outlives this instance.
-  // It is used to create new instances of |bound_net_log_| on canary
-  // requests.
-  net::NetLog* net_log_;
-
   // The caller must ensure that the |event_store_| outlives this instance.
   DataReductionProxyEventStore* event_store_;
 
-  base::Callback<void(bool)> on_data_reduction_proxy_enabled_;
+  // The caller must ensure that the |config_| outlives this instance.
+  DataReductionProxyConfig* config_;
 
-  DataReductionProxyConfigurator* configurator_;
+  base::Callback<void(bool)> on_data_reduction_proxy_enabled_;
 
   base::ThreadChecker thread_checker_;
 
-  scoped_ptr<DataReductionProxyConfig> config_;
-
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxySettings);
 };