Adding opt out and previews type information to DRP pingback

components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h

Index: components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h
diff --git a/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h b/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h
index a91a44cf0d9dac350922339e08c146670b768e6b..2d296ed36b7d8ca4116b720855c99a4399f0f870 100644
--- a/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h
+++ b/components/data_reduction_proxy/core/browser/data_reduction_proxy_pingback_client.h
@@ -5,6 +5,8 @@
 #ifndef COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_PINGBACK_CLIENT_H_
 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_DATA_REDUCTION_PROXY_PINGBACK_CLIENT_H_
 
+#include <stdint.h>
+
 #include <memory>
 #include <string>
 
@@ -40,12 +42,23 @@ class DataReductionProxyPingbackClient : public net::URLFetcherDelegate {
   // Sends a pingback to the data saver proxy server about various timing
   // information.
   virtual void SendPingback(const DataReductionProxyData& data,
-                            const DataReductionProxyPageLoadTiming& timing);
+                            const DataReductionProxyPageLoadTiming& timing,
+                            const void* tab_identifier_key);
 
   // Sets the probability of actually sending a pingback to the server for any
   // call to SendPingback.
   void SetPingbackReportingFraction(float pingback_reporting_fraction);
 
+  // Adds an opt out for |tab_identifier_key| for a data saver |page_id|.

[bengr, 2017/04/20 17:36:19]

What's an opt out? Define somewhere.

[RyanSturm, 2017/04/20 20:25:45]

Done.

+  void AddOptOut(const void* tab_identifier_key, uint64_t page_id);
+
+  // Removes any stored data associated with |tab_identifier_key| in a task that
+  // runs later.
+  void ClearTabKeyAsync(const void* tab_identifier_key);
+
+  // The total number of pending loads being tracked due to opt outs.
+  size_t PendingTabLoadsForTesting() const;
+
  protected:
   // Generates a float in the range [0, 1). Virtualized in testing.
   virtual float GenerateRandomFloat() const;
@@ -66,6 +79,9 @@ class DataReductionProxyPingbackClient : public net::URLFetcherDelegate {
   // reset to an empty RecordPageloadMetricsRequest.
   void CreateFetcherForDataAndStart();
 
+  // Removes any stored data associated with |tab_identifier_key|.
+  void ClearTabKeySync(const void* tab_identifier_key);
+
   net::URLRequestContextGetter* url_request_context_;
 
   // The URL for the data saver proxy's ping back service.
@@ -80,6 +96,9 @@ class DataReductionProxyPingbackClient : public net::URLFetcherDelegate {
   // The probability of sending a pingback to the server.
   float pingback_reporting_fraction_;
 
+  // The map of tab identifier keys to page IDs.
+  std::map<const void*, uint64_t> tab_page_id_map_;
+
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(DataReductionProxyPingbackClient);