Simple fallback implementation.

chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h

Index: chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
diff --git a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
index f066d661713d4b39fbef8b3e680667d43f6546dc..897920a73bee8716d37d2578013bcf70533a35de 100644
--- a/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
+++ b/chrome/browser/net/spdyproxy/data_reduction_proxy_settings.h
@@ -18,6 +18,9 @@
 class PrefService;
 
 namespace net {
+class AuthChallengeInfo;
+class HostPortPair;
+class HttpNetworkSession;

[bengr, 2013/10/22 01:02:09]

alphabetize.

[marq (ping after 24h), 2013/10/22 14:44:20]

? Au < Ho < Ht, right?

[bengr, 2013/10/22 17:49:30]

Right. I don't know what I was looking at.

 class URLFetcher;
 }
 
@@ -42,12 +45,15 @@ class DataReductionProxySettings
       public net::NetworkChangeNotifier::IPAddressObserver {
  public:
   typedef std::vector<long long> ContentLengthList;
+  typedef std::vector<net::HostPortPair> DataReductionProxyList;
 
   DataReductionProxySettings();
   virtual ~DataReductionProxySettings();
 
   void InitDataReductionProxySettings();
 
+  void InitDataReductionProxySession(net::HttpNetworkSession* session);

[bengr, 2013/10/22 01:02:09]

Add a comment.

[marq (ping after 24h), 2013/10/22 14:44:20]

Done.

+
   // Add a host pattern to bypass. This should follow the same syntax used
   // in net::ProxyBypassRules; that is, a hostname pattern, a hostname suffix
   // pattern, an IP literal, a CIDR block, or the magic string '<local>'.
@@ -75,8 +81,13 @@ class DataReductionProxySettings
   // Returns the URL of the data reduction proxy.
   std::string GetDataReductionProxyOrigin();
 
-  // Returns a configuration string for the proxy.
-  std::string GetDataReductionProxyAuth();
+  // Returns the URL of the fallback data reduction proxy.
+  std::string GetDataReductionProxyFallback();
+
+  DataReductionProxyList GetDataReductionProxies();

[bengr, 2013/10/22 01:02:09]

Comment.

[marq (ping after 24h), 2013/10/22 14:44:20]

Done.

+
+  bool IsAcceptableAuthChallenge(net::AuthChallengeInfo* auth_info);

[bengr, 2013/10/22 01:02:09]

Comment.

[marq (ping after 24h), 2013/10/22 14:44:20]

Done.

+  base::string16 GetTokenForAuthChallenge(net::AuthChallengeInfo* auth_info);

[bengr, 2013/10/22 01:02:09]

Comment.

[marq (ping after 24h), 2013/10/22 14:44:20]

Done.

 
   // Returns true if the proxy is enabled.
   bool IsDataReductionProxyEnabled();
@@ -113,8 +124,6 @@ class DataReductionProxySettings
   virtual PrefService* GetOriginalProfilePrefs();
   virtual PrefService* GetLocalStatePrefs();
 
-  std::string GetDataReductionProxyOriginHostPort();
-
   bool IsProxyOriginSetOnCommandLine();
   void GetContentLengths(unsigned int days,
                          int64* original_content_length,
@@ -150,6 +159,10 @@ class DataReductionProxySettings
   friend class DataReductionProxySettingsTestBase;
   friend class DataReductionProxySettingsTest;
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
+                           TestAuthHashGeneration);
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
+                           TestAuthHashGenerationWithOriginSetViaSwitch);
+  FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestResetDataReductionStatistics);
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxySettingsTest,
                            TestIsProxyEnabledOrManaged);
@@ -185,6 +198,8 @@ class DataReductionProxySettings
   void ProbeWhetherDataReductionProxyIsAvailable();
   std::string GetProxyCheckURL();
 
+  base::string16 AuthHashForSalt(int64 salt);

[bengr, 2013/10/22 01:02:09]

Comment.

[marq (ping after 24h), 2013/10/22 14:44:20]

Done.

+
   std::vector<std::string> bypass_rules_;
 
   // Indicate whether a user has turned on the data reduction proxy previously