[DRP] Consistently use LoFi for an entire page

components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h
index 141a09b6fb89bd36f55e5f3f3fedd2505fade0f5..32def1676e997efd44799f5a76bb38bf18762418 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_io_data.h
@@ -18,6 +18,7 @@
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_network_delegate.h"
 #include "components/data_reduction_proxy/core/browser/data_reduction_proxy_request_options.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_event_storage_delegate.h"
+#include "components/data_reduction_proxy/core/common/data_reduction_proxy_lofi_helper.h"
 
 namespace base {
 class Value;
@@ -87,6 +88,11 @@ class DataReductionProxyIOData : public DataReductionProxyEventStorageDelegate {
   // Applies a serialized Data Reduction Proxy configuration.
   void SetDataReductionProxyConfiguration(const std::string& serialized_config);
 
+  // Returns true when Lo-Fi "q=low" header should be added to the Chrome Proxy
+  // header or when the user is in the Lo-Fi "Control" group and the network
+  // quality is prohibitively slow. Should be called only on main frame loads.
+  bool ShouldEnableLoFiMode(net::URLRequest* url_request);
+
   // Sets Lo-Fi mode off in |config_|.
   void SetLoFiModeOff();
 
@@ -162,6 +168,15 @@ class DataReductionProxyIOData : public DataReductionProxyEventStorageDelegate {
     debug_ui_service_= ui_service.Pass();
   }
 
+  DataReductionProxyLoFiHelper* lofi_helper() const {
+    return lofi_helper_.get();
+  }
+
+  void set_lofi_helper(
+      scoped_ptr<DataReductionProxyLoFiHelper> lofi_helper) const {
+    lofi_helper_ = lofi_helper.Pass();
+  }
+
  private:
   friend class TestDataReductionProxyIOData;
   FRIEND_TEST_ALL_PREFIXES(DataReductionProxyIODataTest, TestConstruction);
@@ -199,6 +214,9 @@ class DataReductionProxyIOData : public DataReductionProxyEventStorageDelegate {
   // interstitials.
   mutable scoped_ptr<DataReductionProxyDebugUIService> debug_ui_service_;
 
+  // Handles the getting and setting of the Lo-Fi UserData on a request.
+  mutable scoped_ptr<DataReductionProxyLoFiHelper> lofi_helper_;
+
   // Creates Data Reduction Proxy-related events for logging.
   scoped_ptr<DataReductionProxyEventCreator> event_creator_;