Domain Reliability: Remove browsing data when requested.

components/domain_reliability/monitor.h

Index: components/domain_reliability/monitor.h
diff --git a/components/domain_reliability/monitor.h b/components/domain_reliability/monitor.h
index 0d890080f22addea2c88224258b018d1c6a0f40e..92e00ab8d76a08ab3fede99eecee46d5e144b46d 100644
--- a/components/domain_reliability/monitor.h
+++ b/components/domain_reliability/monitor.h
@@ -10,6 +10,7 @@
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "components/domain_reliability/beacon.h"
+#include "components/domain_reliability/clear_mode.h"
 #include "components/domain_reliability/config.h"
 #include "components/domain_reliability/context.h"
 #include "components/domain_reliability/dispatcher.h"
@@ -54,10 +55,19 @@ class DOMAIN_RELIABILITY_EXPORT DomainReliabilityMonitor {
   // actually started before it was terminated.)
   void OnCompleted(net::URLRequest* request, bool started);
 
+  // Called to remove browsing data. With CLEAR_BEACONS, leaves contexts in
+  // place but clears beacons (which betray browsing history); with
+  // CLEAR_CONTEXTS, removes all contexts (which can behave as cookies).
+  void ClearBrowsingData(DomainReliabilityClearMode mode);
+
   DomainReliabilityContext* AddContextForTesting(
       scoped_ptr<const DomainReliabilityConfig> config);
 
   size_t contexts_size_for_testing() const { return contexts_.size(); }
+  bool was_cleared_for_testing() const { return was_cleared_; }
+  DomainReliabilityClearMode cleared_mode_for_testing() const {
+    return cleared_mode_;
+  }
 
  private:
   friend class DomainReliabilityMonitorTest;
@@ -83,6 +93,8 @@ class DOMAIN_RELIABILITY_EXPORT DomainReliabilityMonitor {
   // (The pointer is only valid until the Monitor is destroyed.)
   DomainReliabilityContext* AddContext(
       scoped_ptr<const DomainReliabilityConfig> config);
+  // Deletes all contexts from |contexts_| and clears the map.
+  void ClearContexts();
   void OnRequestLegComplete(const RequestInfo& info);
 
   scoped_ptr<MockableTime> time_;
@@ -93,6 +105,9 @@ class DOMAIN_RELIABILITY_EXPORT DomainReliabilityMonitor {
   scoped_ptr<DomainReliabilityUploader> uploader_;
   ContextMap contexts_;
 
+  bool was_cleared_;
+  DomainReliabilityClearMode cleared_mode_;
+
   DISALLOW_COPY_AND_ASSIGN(DomainReliabilityMonitor);
 };